Weather in Lat Krabang in September
Thailand · 20-year averages, September
A hard month. September is a hard month in Lat Krabang, and worth planning around. You should expect rain on 26 days of the month, which is more days wet than dry.
September ranks 6 of 12 in Lat Krabang: past the worst of the year but short of December, which is the month to book if the dates are open.
Rain on 26 of the month's 30 days, 9 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. Natural fibres and a second shirt for the day. At 83% nothing dries, including you.
What the averages hide
Averages flatten a month, and this one hides a few things: 17 days top 30 °C — hot spells arrive, but they break; the day barely swings — 4.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest September day reached 34 °C and the coldest night fell to 23.5 °C, and the wettest single day dropped 79 mm — roughly 31% of the month's rain in one day.
September is one of the reliable ones — rainfall has stayed between 192 mm and 379 mm across all twenty years, a narrow enough band that the 251 mm average is something you can plan against rather than merely quote.
Wind is light at 8.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 83%, high enough to notice on the warm days without dominating them.
How September sits in the year
Temperatures hold steady either side: 31 °C in August, 30.1 here, 29.9 in October. Nothing about the timing within the month matters much.
Daylight in September
Lat Krabang sits close enough to the equator that daylight barely moves all year — 12.2 hours in September, 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: 12.8 °C between the year's warmest afternoons and coldest nights.
How busy it gets
Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
September in Lat Krabang versus nearby
If Lat Krabang is one option among several, the nearby comparison is worth making. Bangkok is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Hua Hin is close enough to be a coin toss — within a degree on temperature, 2 days more rain.
So: September is a compromise. December is 32 points better and is what Lat Krabang 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 Lat Krabang
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 31.8 | 22.1 | 4 | 21 | 67 | 11.4 | 72 |
| February | 33.4 | 24.2 | 4 | 16 | 66 | 11.7 | 65 |
| March | 33.9 | 25.9 | 9 | 51 | 69 | 12 | 53 |
| April | 34.2 | 27.2 | 12 | 72 | 70 | 12.4 | 46 |
| May | 32.6 | 27.2 | 22 | 152 | 76 | 12.8 | 40 |
| June | 31.4 | 26.5 | 24 | 152 | 79 | 12.9 | 45 |
| July | 31 | 25.9 | 24 | 152 | 80 | 12.9 | 47 |
| August | 31 | 25.7 | 25 | 155 | 80 | 12.6 | 47 |
| September | 30.1 | 25.6 | 26 | 251 | 83 | 12.2 | 48 |
| October | 29.9 | 25 | 24 | 221 | 84 | 11.8 | 48 |
| November | 30 | 23.3 | 9 | 49 | 80 | 11.5 | 71 |
| December | 30.3 | 21.4 | 3 | 10 | 72 | 11.3 | 80 |
See all twelve months in Lat Krabang, or where else to go in September.
Planning the rest of the trip
- Flight time to Lat Krabang how long you are actually in the air
- Lat Krabang time zone and the difference from home
- Days until your trip count down to the departure date