Travel Weather Fairy🎊 Featured event
Loy Krathong
📅 Around November · lunar-calendar date varies each year
Thailand’s traditional festival of floating lanterns on water. Check the year’s official schedule for the exact Bangkok date and venues.
Check official source →🇹🇭 Thailand · Bangkok
Bangkok Weather in September
Wet seasonIn Bangkok, September averages about 31°C (88°F) during the day and 25°C (77°F) at night, so afternoons generally feel hot while evenings are warm. Rain is a major part of trip planning, with about 27 days reaching at least 1 mm of precipitation and roughly 297 mm for the month.
Avg high87.8°F 31.0°CAvg low77.1°F 25.1°CRainy days~27.1 daysMonthly rain296.7 mm
🧳 Packing guide
What to wear in Bangkok in September
A practical September packing list for Bangkok starts here: light, breathable clothes work best, with sun protection for long outdoor days. Add a compact umbrella or light rain jacket because wet weather is common enough to affect sightseeing.
Travel takeaway: The month can work well for a trip if you are comfortable building indoor alternatives around wetter periods.
🗓️ Travel timing at a glance
Bangkok: 12-month travel weather
Bangkok is relatively dry and cooler from November to February, extremely hot around March–April, and wetter from May to October.
JanDry seasonFebDry seasonMarHot dry seasonAprHot dry seasonMayWet seasonJunWet seasonJulWet seasonAugWet seasonSepWet seasonOctWet seasonNovDry seasonDecDry season
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
🎉 Trip planning check
Bangkok 2026 events & busy periods
Check major events, holidays and periods that may affect crowds, transport or opening hours.
⚠️ Busy / closure period
Songkran holiday and festival period
📅 Around Apr 13–15
A great time for the festival, but central sights and roads can become extremely busy. Expect wet conditions while moving around the city.
Check official source →Event dates, holiday schedules and opening hours can change. Recheck the linked official tourism or government source before departure.
Bangkok in September · recent 3 years
Compare the most recent complete year with the two years before it. Daily high / low temperatures are shown in °F.
CalendarNo measurable rain🌧️ Rain⛈️ Thunderstorm❄️ SnowHigh / Low · °F
⭐ September 2025 · latest complete year☔ 29 days · 263.4 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
31.1°C/24.2°C
🌧️ 4.8 mm
2
30.7°C/25.8°C
🌧️ 4 mm
3
30.9°C/25.8°C
🌧️ 5.2 mm
4
30.5°C/25°C
🌧️ 8.2 mm
5
32.3°C/24.8°C
🌧️ 7.5 mm
6
31.6°C/25.4°C
🌧️ 12.9 mm
7
31°C/24.6°C
🌧️ 21.7 mm
8
29.2°C/24.6°C
🌧️ 27.8 mm
9
29.7°C/25.5°C
🌧️ 16.2 mm
10
28.7°C/24.4°C
🌧️ 4 mm
11
31.4°C/24.9°C
🌧️ 1.3 mm
12
32.1°C/25.9°C
🌧️ 10.1 mm
13
33.2°C/25.1°C
🌧️ 1.6 mm
14
30.2°C/24.2°C
🌧️ 2.8 mm
15
31.1°C/24.7°C
🌧️ 1.9 mm
16
31.5°C/24.6°C
🌧️ 4.1 mm
17
31.9°C/25.5°C
🌧️ 13.5 mm
18
31.8°C/24.9°C
🌧️ 7.5 mm
19
29.7°C/25.1°C
🌧️ 7.8 mm
20
30.6°C/26.3°C
🌧️ 4.4 mm
21
30.9°C/26.1°C
🌧️ 17.2 mm
22
31.7°C/25.1°C
🌧️ 1.9 mm
23
30.7°C/25.8°C
🌧️ 3.3 mm
24
30°C/26.2°C
🌧️ 4.2 mm
25
30.9°C/25.6°C
🌧️ 6 mm
26
29.9°C/25.5°C
🌧️ 10.4 mm
27
29.9°C/24.4°C
🌧️ 25.6 mm
28
31.8°C/24.2°C
No rain
29
31.8°C/24.8°C
🌧️ 9.2 mm
30
29.2°C/25.5°C
🌧️ 17.6 mm
September 2024☔ 29 days · 293.9 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
32.3°C/25.4°C
🌧️ 18.1 mm
2
31°C/25°C
🌧️ 23 mm
3
30.2°C/24.8°C
🌧️ 11.2 mm
4
30.6°C/25.3°C
🌧️ 13.5 mm
5
32.1°C/24.4°C
🌧️ 8.4 mm
6
31.9°C/25.4°C
🌧️ 17.8 mm
7
32°C/25.4°C
No rain
8
32.3°C/26°C
🌧️ 1.6 mm
9
31.1°C/26.3°C
🌧️ 4.1 mm
10
32.1°C/25.4°C
🌧️ 6.4 mm
11
30.7°C/26.1°C
🌧️ 6.6 mm
12
32.4°C/25.1°C
🌧️ 13.7 mm
13
31.4°C/25.8°C
🌧️ 6.1 mm
14
31.8°C/25.2°C
🌧️ 18 mm
15
31.7°C/25.4°C
🌧️ 17.4 mm
16
32.9°C/24.7°C
🌧️ 13.2 mm
17
32.9°C/26.2°C
🌧️ 3.9 mm
18
31.6°C/25.2°C
🌧️ 19.5 mm
19
31.6°C/24.7°C
🌧️ 5.4 mm
20
31.9°C/24.9°C
🌧️ 15.3 mm
21
30.9°C/24.9°C
🌧️ 10.7 mm
22
30.1°C/26°C
🌧️ 11.4 mm
23
31°C/25.8°C
🌧️ 3.6 mm
24
28.9°C/26.1°C
🌧️ 4.7 mm
25
30.6°C/24.8°C
🌧️ 6.7 mm
26
31.5°C/25.1°C
🌧️ 9.2 mm
27
31.8°C/24.8°C
🌧️ 5.6 mm
28
31.5°C/25.5°C
🌧️ 1.6 mm
29
31.8°C/26.7°C
🌧️ 2.2 mm
30
33.3°C/25.8°C
🌧️ 14.2 mm
September 2023☔ 29 days · 364.3 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
32.4°C/26.2°C
🌧️ 23 mm
2
32.9°C/25.4°C
🌧️ 17.8 mm
3
31.7°C/25.2°C
🌧️ 4 mm
4
32.3°C/25.5°C
🌧️ 10.2 mm
5
31.7°C/26.2°C
🌧️ 17.5 mm
6
32°C/26.1°C
🌧️ 2.3 mm
7
32.5°C/25.8°C
🌧️ 1.9 mm
8
31.6°C/26°C
🌧️ 5.8 mm
9
33.1°C/25.7°C
🌧️ 26.8 mm
10
30.5°C/26.1°C
🌧️ 7 mm
11
31°C/25.6°C
🌧️ 16 mm
12
30.6°C/26°C
🌧️ 13.1 mm
13
30.6°C/25.6°C
🌧️ 3.5 mm
14
30.7°C/25°C
🌧️ 8.5 mm
15
31.5°C/25°C
🌧️ 30.3 mm
16
31.1°C/25.2°C
🌧️ 24.4 mm
17
30.6°C/25.3°C
🌧️ 10 mm
18
30.8°C/25.4°C
🌧️ 3.8 mm
19
31.8°C/25.2°C
🌧️ 2.5 mm
20
33.1°C/25.4°C
No rain
21
33.4°C/25.3°C
🌧️ 29.4 mm
22
32.5°C/24.3°C
🌧️ 6.3 mm
23
31.6°C/25.2°C
🌧️ 4.3 mm
24
32.6°C/25.4°C
🌧️ 13.4 mm
25
32.7°C/26°C
🌧️ 6.8 mm
26
31.6°C/24.9°C
🌧️ 10.1 mm
27
28°C/24.2°C
🌧️ 21.3 mm
28
29.5°C/24.4°C
🌧️ 28.4 mm
29
30.4°C/25.9°C
🌧️ 5.9 mm
30
29.9°C/25.1°C
🌧️ 9.5 mm
Historical calendars use Open-Meteo reanalysis data. A rainy day is counted when daily precipitation is at least 1 mm. Conditions at a specific hotel, beach or station can differ.
✈️ Traveling soon?
Current Bangkok weather and 7-day forecast
When departure is close, the latest forecast matters more than long-term averages.
Loading current weather…
Loading 7-day forecast…
Forecast data: MET Norway · CC BY 4.0 · cached by Travel Weather Fairy
💱 Quick currency check
Local currency to U.S. dollars
Loading exchange rate…
💱 Loading exchange rate…
Bangkok weather in other months
Switch months to compare the seasonal pattern.