Perseids from Bangkok in 2026

Perseids from Bangkok: the short answer

For Bangkok, Perseids maximum lands at 09:00 on 13 August 2026. Culmination 06:04 at 45.8° — that is 72% of what the same stream would deliver with the radiant overhead — and the ceiling on the rate is 64.3 meteors an hour.

That ranks it 2nd of twelve from Bangkok this year, behind the Geminids (141.8/h).

The radiant track over this city

The radiant rises at 22:32 bearing NNE, culminates 45.8° up at 06:04 towards north (0°), and sets at 13:35. It lies inside Cassiopeia. The rate scales with the sine of that altitude, so 45.8° buys you 72% of a zenith radiant.

When it gets dark here

Bangkok loses the Sun at 18:41 and gets it back at 06:04. True astronomical darkness — the only part that counts for faint meteors — runs 19:55 to 04:50, 8 h 54 min out of 11 h 23 min of night.

Local solar midnight, the true middle of the night, falls at 00:23 here rather than at 00:00: Asia/Bangkok runs 18 minutes ahead of mean solar time at 100.50°E. That offset is why the best hour on this page is not the hour you would guess from the clock.

What the Moon does here

The Moon is 0% illuminated and below the horizon for 10 of the 10 sampled dark hours, so moonlight subtracts essentially nothing here. Moonrise 06:22. Moonset 18:27. At the best hour the limiting magnitude reaches 6.50 — the reference sky's full value.

Why 64 an hour and not 100

Converting ZHR 100 into something useful for Bangkok means multiplying by sin(44.2°) and dividing by 2.2 raised to (6.5 − 6.50). That lands at 64.3 meteors an hour, from fast 58.8 km/s entries.

Hour by hour the modelled rate runs from 0.0 at 20:00 (radiant -14.5°) to 27.2 at 05:00 (radiant 44.2°), peaking at 64.3. That spread across 10 hours is why a "what time" answer beats a "how many" answer.

The stream comes from Comet 109P/Swift-Tuttle and is listed as active 17 July to 24 August, so 13 August 2026 is the best night from Bangkok rather than the only one.

Watching from around Bangkok

Bangkok is the 55th largest of the 300 cities covered here, with a population of 5.10 million at 12 m above sea level. The nearest other cities on the site are Phnom Penh (537 km ESE), Yangon (576 km NW), Cần Thơ (708 km SE) — close enough that the radiant altitudes barely change, far enough that sunset and moonrise do.

What this page does not know

Light-pollution data for this location is not connected yet. Rates on this page are computed against the reference rural sky the zenithal hourly rate is defined for (naked-eye limiting magnitude 6.5); they are not a claim about how bright the sky is where you are standing. Once the light-pollution layer is connected these figures will be recomputed for the local sky and will generally fall.

Cloud cover is a forecast, not a constant, so it is resolved when you load the tonight card and is deliberately absent from this prerendered page — the hourly table shows "unavailable" rather than assuming clear skies. Meteor outbursts, local terrain and building horizons are not modelled.

A single observer with an unobstructed horizon typically records 30–50% below the ideal-sky figure. Give your eyes twenty minutes to adapt, keep bright screens away, look about halfway up the sky rather than straight at the radiant, and count for a full hour before judging a shower.