Planetary Transits August 2026: Sidereal and Tropical Calendar

This is the complete reference for August 2026 — every ingress, every lunation, and every planetary position in both the tropical and true sidereal zodiacs. August is a Leo month. The Sun holds Leo until late in the month, Mercury crosses into Leo, and Jupiter is already there for its long stay — so when the New Moon lands at 20° Leo on August 12, it lands in a sign that's already crowded with light. Around that center, Venus returns to the sign it rules, Mars changes emotional register, and two full moons bracket the window. And this month carries extra weight: both of August's lunations are eclipses — the August 12 New Moon is a total solar eclipse and the August 28 Full Moon is a partial lunar eclipse.

Here's where it gets interesting: check the same month in true sidereal and the picture slides. That Leo pile-up reads as Cancer. Mars entering tropical Cancer reads as still finishing Gemini. Venus entering tropical Libra reads as late Virgo. Same planets, same days, a different backdrop of stars. To see exactly where these positions fall in your own chart, run a free sidereal birth chart next to your tropical one — the gap between the two layers is where the reading lives.

August 2026 at a Glance#

Times below are drawn from Swiss Ephemeris positions in UT; the sign each planet occupies holds regardless of your time zone, though an ingress can fall a calendar day earlier or later depending on where you are.

The Two Zodiacs: A Quick Orientation#

If you're new to this: the tropical and sidereal zodiacs are two ways of dividing the same sky. They agreed roughly 1,700 years ago. They don't anymore.

Tropical (used in most Western astrology) is anchored to the seasons. The equinox defines 0° Aries, regardless of which constellation the Sun sits in front of. Tropical tracks your relationship to Earth's seasonal cycle.

True sidereal (what Synthesis reads) is anchored to the fixed stars — and specifically to the constellations as astronomers actually draw them. Because of the slow wobble of Earth's axis (precession), the tropical and star-based frames have drifted roughly a sign apart. But the real constellations are unequal in width, so the shift varies: a planet at 5° tropical Pisces sits against the stars of Aquarius, while 20° tropical Leo — this month's eclipse point — still sits among the wide stars of Leo.

Neither system is wrong; they measure different things. Tropical tracks the seasonal and psychological layer — how you present, relate, and function. Sidereal tracks a deeper structural layer — instinctive patterns, default reactions, what runs beneath conscious identity. At Synthesis we read both (plus Draconic, Chinese, and Numerology), because each adds a different color to the mix.

Now, here's August.

Carried Over from July#

Three late-July shifts set the tone for the opening days of the window, so they're worth naming before August proper.

Mercury stations direct — July 23, 16° Cancer. Mercury's retrograde ends here, and the post-retrograde shadow clears over the following two weeks. Plans, messages, and logistics that felt tangled in mid-July tend to firm up as August opens. In true sidereal, Mercury is finishing its pass through Gemini — a fitting backdrop for a planet re-gathering its own threads.

Saturn stations retrograde — July 26, 15° Aries. Saturn turns retrograde in early Aries and stays that way through the autumn. Saturn retrograde tends to read as an internal audit rather than an external block: the structures you've been building get re-examined for what actually holds weight. In true sidereal this sits back in Pisces, coloring the review with a more dissolving, "what am I ready to release" quality.

Full Moon — July 29, 6° Aquarius. The window opens on an Aquarius Full Moon opposite the early-Leo Sun. The Leo-Aquarius axis tends to surface the tension between individual expression and the group it belongs to — what you want to shine for, against what the collective needs. In true sidereal this lunation lands nearer Capricorn, shifting the register toward what's structurally sustainable rather than what's ideologically bright.

Venus Enters Libra — August 6#

Venus moves into Libra, one of the two signs it rules. Venus in its own domicile tends to function smoothly: relating, aesthetics, and the sense of fairness that governs both love and money find an easier footing. The Libra register favors negotiation over confrontation, symmetry over excess. Where relationships or finances felt effortful in July, this can be the transit where balance becomes available again — not guaranteed, but easier to reach for.

In true sidereal, Venus is still working through the large constellation of Virgo, so the star-based read stays more discerning and detail-attentive than the tropical Libra picture suggests. The pattern here is refinement first, harmony second: sorting what's actually worth valuing before extending the goodwill.

Mercury Enters Leo — August 9#

Fresh out of its retrograde, Mercury enters Leo and joins the month's gathering emphasis there. Mercury in Leo tends to think and speak with more warmth, confidence, and performance — ideas want an audience, communication takes on flair. It's a good stretch for pitching, teaching, and creative expression, less so for fine print (Leo prefers the headline to the footnote).

In true sidereal, Mercury is crossing into late Cancer, which keeps the undertone more personal and feeling-led than the tropical Leo read. The pattern: bold on the surface, tender underneath — you may say something with conviction and only later notice how much feeling was riding beneath it.

Mars Enters Cancer — August 11#

Mars shifts from Gemini's cerebral back-and-forth into Cancer, changing the register of drive from mental to protective. Cancer is a challenging placement for Mars — traditionally its fall — because Cancer's indirect, defensive style doesn't match Mars's preference for the straight line. Action tends to move sideways: through care, through guarding a boundary, through what's felt rather than declared. The constructive expression is fierce protectiveness and stamina in service of home and belonging; the difficult expression is moodiness, passive pressure, and anger that leaks rather than lands.

In true sidereal, Mars is still finishing Gemini, so the star-based layer keeps some of that quick, verbal, restless quality even as the tropical layer turns toward the home front. If you feel both — an urge to defend the nest and an urge to keep moving and talking — you're reading both layers at once.

New Moon in Leo — August 12: A Total Solar Eclipse#

The month's centerpiece. The New Moon falls at approximately 20° Leo, and it lands close to Jupiter, which has been in Leo since late June. A New Moon is a reset — the start of a lunar cycle — and this one carries Jupiter's amplifying signature. It is also more than a New Moon: it is a total solar eclipse (17:45 UT), the first whose path of totality crosses mainland Europe since 1999, running from the Arctic across Iceland to northern Spain. An eclipse is a New Moon with the volume turned up — the same fresh-start symbolism, compressed and intensified. For the full breakdown, see the August 2026 solar eclipse guide.

Tropical: A Leo New Moon is a planting point for self-expression, creative risk, and visible leadership. With Jupiter nearby, the theme is expansion: the intentions set here tend to want to grow larger than they start. The caution built into that gift is proportion — Leo-Jupiter can overreach, promising more than the follow-through can carry. Set the intention boldly, then leave room for it to be right-sized later.

True sidereal: Here the two zodiacs agree. The IAU constellation of Leo is wide — nearly forty degrees of ecliptic — so this eclipse lands at roughly 5° Leo in true sidereal as well. When both frameworks put the same event in the same sign, the theme comes through without translation: this is a Leo moment in either system, and the questions it raises about visibility, creative courage, and what you are willing to be seen wanting are the same questions at both depths.

Sun Enters Virgo — August 23#

The Sun leaves Leo for Virgo, turning the solar emphasis from expression to refinement. After weeks of Leo warmth and visibility, Virgo season asks the practical follow-up: what needs sorting, improving, or maintaining? The register cools from the spotlight to the workbench — health routines, systems, and the small corrections that make big things function.

In true sidereal, the Sun is still moving through Leo at this point, so the star-based backdrop keeps some of the month's earlier heat even as the tropical calendar turns analytical. The pattern is a soft handoff rather than a hard switch: the impulse to shine and the impulse to refine overlap for a stretch.

Mercury Enters Virgo — August 25#

Two days after the Sun, Mercury enters Virgo — the sign it both rules and is exalted in. This is Mercury at its most precise: analytical, editorial, good with detail, systems, and the follow-through that Leo skipped. It's a strong window for reviewing what was launched earlier in the month, tightening logistics, and turning broad ideas into workable specifics. The shadow side is over-correction — Virgo Mercury can polish a thing past the point of shipping it.

In true sidereal, Mercury too is still in Leo, keeping a thread of warmth and audience-awareness under the tropical precision. The pattern: exacting on the page, still a little theatrical in the room.

Full Moon in Pisces — August 28#

The window closes on a Full Moon at approximately 5° Pisces (04:12 UT) that is also a partial lunar eclipse — the closing bracket of the window the August 12 solar eclipse opened. It sits opposite the late-Leo/early-Virgo Sun. The Virgo-Pisces axis tends to surface the tension between what can be measured and what can only be felt — between the checklist and the intuition, the fix and the surrender. Pisces Full Moons often bring a wash of feeling that the analytical Virgo Sun wants to organize; the workable move is to let both have their turn rather than forcing one to win.

In true sidereal, this lunation lands nearer Aquarius, shifting the register from mystical dissolution toward a cooler, more systemic reflection — less "feel it all," more "see the whole pattern." As with the month's other lunations, the two layers describe different depths of the same night.

The Backdrop: Jupiter in Leo#

Everything in August happens against Jupiter in Leo, which began on June 30, 2026 and runs for about thirteen months. Jupiter expands whatever it touches, and in Leo it expands confidence, creativity, generosity, and the appetite for recognition. Through August it sits close enough to the Leo Sun, Mercury, and New Moon that the whole month tilts toward growth, visibility, and warmth — with the standing caution that Jupiter also enlarges the blind spots, so proportion is the discipline the transit asks for.

In true sidereal, Jupiter reads against Cancer rather than Leo, grounding the expansion in themes of home, family, and emotional security rather than pure self-expression. Where tropical Jupiter in Leo says "grow by being seen," sidereal Jupiter in Cancer says "grow by being rooted." Both can be true at once.

Looking Ahead to September 2026#

August's Leo warmth gives way to a busier, more mechanical September. Several stations and ingresses stack in the first half of the month.

The one to watch is Uranus stationing retrograde at 6° Gemini on September 10 — the outer-planet pivot that begins reviewing the communication-and-information themes Uranus opened when it entered Gemini earlier in the year. In true sidereal, Uranus still reads against Taurus, so the star-based layer keeps the disruption anchored to material and financial structures rather than pure information flow.

What Both Systems Agree On#

Despite the offset, both frameworks point to the same structural features in August 2026:

1. A center of gravity. Both zodiacs put the month's cluster — Sun, Jupiter, and the eclipse New Moon — in Leo itself: the constellation is wide enough that even the sidereal layer keeps the eclipse inside it. August has a clear thematic focus rather than a scattered one.
2. Forward motion. No planet stations retrograde during August itself (Uranus waits until September 10, Saturn turned in late July). The month tends to move rather than review.
3. A watery close. Both layers read the August 28 Full Moon as a shift from the analytical to the felt — a reminder that the month's bright, busy middle resolves into something quieter.

Where They Diverge — And Why That Matters#

The Leo core of the month survives translation — but the edges of August don't. The two full moons both shift sign in true sidereal: July 29 reads as Capricorn rather than Aquarius, and the August 28 lunar eclipse reads as Aquarius rather than Pisces. The personal planets shift too: Mars entering tropical Cancer is still moving through the stars of Gemini, Venus entering tropical Libra is still in Virgo, and Mercury's Leo ingress reads as Cancer until later in the month.

That matters most for the lunar eclipse. Tropical Pisces asks you to feel the month's endings; sidereal Aquarius asks you to understand them — to step back far enough to see the pattern rather than drown in the wash of it. If you track your own experience through late August, both descriptions may resonate at different levels: the feeling is real, and so is the pattern underneath it. Two frameworks, two depths of the same night sky.

Reading both doesn't hand you a finished answer — no system does. But it gives you more dimensions to work with, and in a month organized this tightly around a single theme, the second layer is often where the nuance hides.

What August Is Asking of You#

An eclipse month organized around one sign asks a narrower, sharper question than most months do. The Leo eclipse doesn't predict an event — it marks a moment when the wish to be seen, to make something and put your name on it, gets harder to ignore. Whether anything comes of that is a choice, not a forecast.

Some questions worth sitting with during the August 12–28 eclipse window:

• Where does 20° Leo fall in your chart? Generate your free birth chart and find the house — that life area, not Leo in the abstract, is where this month's question lives.
• What have you been making smaller than it wants to be — and who are you making it smaller for?
• The August 28 lunar eclipse closes what the solar eclipse opens. What would a two-week experiment in being more visible look like, and what would you want to keep from it?

Growing Through It with Your Chat Guide#

The Synthesis chat guide reads these transits against your actual chart, and it remembers your context from one conversation to the next — so it can track what you set in motion at the solar eclipse and revisit it with you at the lunar one. Some questions to bring it during the window:

• "The August 12 eclipse falls in my 10th house — what pattern is it highlighting for me?"
• "I set an intention at the New Moon. Help me pressure-test whether it's proportionate or Jupiter-inflated."
• "The lunar eclipse on the 28th sits opposite my natal Sun. What is this axis asking me to balance?"

The chat guide comes with Circle membership ($10/mo), and every $28 full reading includes a month of full access.

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Want to see where August's transits land in your specific chart? Generate your free birth chart across five systems — Tropical, Sidereal, Draconic, Chinese, and Numerology — and see which signs dominate your mix.