Weather in Bangkok in July

A hard month. July is a hard month in Bangkok, and worth planning around. You should expect rain on 24 days of the month, which is more days wet than dry.

July ranks 7 of 12 in Bangkok: past the worst of the year but short of December, which is the month to book if the dates are open.

Rain on 24 of the month's 31 days, 6 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Pack for 31.7 °C days and 24.5 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 27 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest July day reached 38.6 °C and the coldest night fell to 22.6 °C, and the wettest single day dropped 103 mm — roughly 61% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 385 mm against 95 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 169 mm average is a reasonable planning figure, not a promise.

Wind is light at 7.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 81%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 32.3 °C in June, 31.7 here, 31.5 in August. Nothing about the timing within the month matters much.

Daylight in July

Bangkok sits close enough to the equator that daylight barely moves all year — 12.9 hours in July, against a range of just 1.6 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 17.1 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Bangkok versus nearby

If Bangkok is one option among several, the nearby comparison is worth making. Lat Krabang is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Hua Hin is close enough to be a coin toss — within a degree on temperature, 3 days more rain.

So: July is a compromise. December is 36 points better and is what Bangkok is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Bangkok

See all twelve months in Bangkok, or where else to go in July.