Bangkok · Thailand

Bangkok in September: every year compared

In September, Bangkok averages highs of 32.5 °C and lows of 26.1 °C, with 237 mm of precipitation. The warmest September was 2001 (29.7 °C), the coldest 1940 (26.0 °C).

Avg. highAvg. high 32.5 °C

Avg. lowAvg. low 26.1 °C

PrecipitationPrecipitation 237 mm

Rainy daysRainy days 25

Day by day through September

Normal high and low for each day of September in Bangkok.

Normal high and low, day by dayNormal 1991–2020

Every September in Bangkok, ranked

86 months of September since 1940. The last one, 2025, ranks 13 of 86 (±0.0 °C vs normal).

194019832025

2025 · 28.7 °C · ±0.0 °C vs normal · rank 13 of 86

Warmest years

1200129.7 °C
2202029.4 °C
3201729.3 °C
4202329.3 °C
5200729.1 °C

Coldest years

1194026.0 °C
2194126.1 °C
3194326.7 °C
4196626.8 °C
5194826.8 °C

All 86 years in a table

Year	Mean temperature	Daytime highs	Night lows	Precipitation	Hot days (30 °C+)	Rainy days
2025	28.7 °C	32.1 °C	26.3 °C	281 mm	29 days	29 days
2024	29.1 °C	32.9 °C	26.5 °C	205 mm	30 days	27 days
2023	29.3 °C	33.2 °C	26.8 °C	254 mm	30 days	30 days
2022	28.3 °C	31.7 °C	26.0 °C	320 mm	26 days	28 days
2021	28.2 °C	31.7 °C	26.1 °C	320 mm	27 days	27 days
2020	29.4 °C	33.1 °C	26.8 °C	215 mm	28 days	24 days
2019	28.6 °C	32.4 °C	26.1 °C	234 mm	26 days	20 days
2018	28.7 °C	32.6 °C	26.0 °C	298 mm	29 days	25 days
2017	29.3 °C	33.1 °C	26.7 °C	163 mm	30 days	23 days
2016	28.7 °C	32.5 °C	26.3 °C	250 mm	26 days	23 days
2015	29.1 °C	33.1 °C	26.4 °C	230 mm	28 days	21 days
2014	28.9 °C	32.7 °C	26.3 °C	158 mm	30 days	22 days
2013	28.3 °C	31.9 °C	26.0 °C	303 mm	24 days	28 days
2012	28.1 °C	31.8 °C	25.8 °C	530 mm	27 days	28 days
2011	28.3 °C	31.8 °C	26.1 °C	314 mm	25 days	25 days
2010	28.8 °C	32.6 °C	26.3 °C	209 mm	29 days	24 days
2009	28.9 °C	32.9 °C	26.4 °C	212 mm	30 days	26 days
2008	28.5 °C	32.4 °C	25.9 °C	244 mm	26 days	23 days
2007	29.1 °C	33.1 °C	26.4 °C	167 mm	29 days	21 days
2006	28.9 °C	32.6 °C	26.3 °C	264 mm	26 days	27 days
2005	28.9 °C	32.5 °C	26.5 °C	215 mm	29 days	24 days
2004	28.6 °C	32.2 °C	26.0 °C	233 mm	28 days	26 days
2003	28.5 °C	32.3 °C	26.1 °C	236 mm	28 days	28 days
2002	28.5 °C	32.1 °C	26.3 °C	255 mm	28 days	27 days
2001	29.7 °C	34.3 °C	26.6 °C	139 mm	30 days	24 days
2000	28.4 °C	32.2 °C	25.8 °C	142 mm	30 days	25 days
1999	28.5 °C	32.3 °C	25.8 °C	192 mm	29 days	24 days
1998	28.5 °C	32.1 °C	26.0 °C	223 mm	29 days	30 days
1997	28.7 °C	32.7 °C	25.8 °C	219 mm	27 days	25 days
1996	27.9 °C	31.4 °C	25.7 °C	361 mm	25 days	29 days
1995	27.9 °C	31.3 °C	25.6 °C	342 mm	23 days	29 days
1994	28.4 °C	32.4 °C	25.9 °C	189 mm	29 days	28 days
1993	28.1 °C	32.0 °C	25.5 °C	198 mm	28 days	30 days
1992	28.7 °C	32.7 °C	25.8 °C	155 mm	30 days	24 days
1991	28.6 °C	32.4 °C	26.0 °C	212 mm	29 days	26 days
1990	28.7 °C	32.9 °C	25.8 °C	171 mm	29 days	27 days
1989	28.5 °C	32.2 °C	26.0 °C	182 mm	29 days	26 days
1988	28.6 °C	32.3 °C	26.0 °C	283 mm	27 days	28 days
1987	28.4 °C	31.9 °C	25.7 °C	254 mm	27 days	27 days
1986	28.4 °C	32.1 °C	25.6 °C	250 mm	26 days	25 days
1985	27.6 °C	31.2 °C	25.0 °C	219 mm	26 days	27 days
1984	27.7 °C	31.4 °C	25.0 °C	219 mm	29 days	27 days
1983	27.8 °C	31.2 °C	25.6 °C	276 mm	28 days	28 days
1982	27.9 °C	31.1 °C	25.5 °C	159 mm	24 days	29 days
1981	28.2 °C	32.2 °C	25.5 °C	217 mm	29 days	23 days
1980	28.1 °C	31.7 °C	25.5 °C	231 mm	28 days	25 days
1979	28.3 °C	32.5 °C	25.2 °C	294 mm	27 days	26 days
1978	27.8 °C	31.3 °C	25.5 °C	242 mm	26 days	27 days
1977	28.0 °C	31.7 °C	25.4 °C	190 mm	27 days	27 days
1976	27.8 °C	31.3 °C	25.1 °C	250 mm	25 days	28 days
1975	27.3 °C	30.8 °C	25.0 °C	299 mm	23 days	29 days
1974	27.8 °C	31.7 °C	25.0 °C	267 mm	28 days	28 days
1973	27.6 °C	31.2 °C	25.2 °C	311 mm	26 days	27 days
1972	27.8 °C	31.3 °C	25.3 °C	392 mm	24 days	28 days
1971	28.0 °C	31.7 °C	25.3 °C	188 mm	28 days	19 days
1970	28.0 °C	31.8 °C	25.4 °C	236 mm	27 days	23 days
1969	27.7 °C	31.4 °C	25.2 °C	235 mm	21 days	25 days
1968	28.1 °C	31.9 °C	25.5 °C	167 mm	27 days	26 days
1967	27.8 °C	31.4 °C	25.4 °C	199 mm	26 days	25 days
1966	26.8 °C	30.0 °C	24.3 °C	194 mm	18 days	23 days
1965	27.5 °C	31.4 °C	24.6 °C	299 mm	23 days	29 days
1964	27.4 °C	30.9 °C	24.8 °C	306 mm	23 days	28 days
1963	27.6 °C	30.9 °C	25.3 °C	343 mm	22 days	27 days
1962	27.2 °C	30.4 °C	24.9 °C	326 mm	17 days	27 days
1961	27.4 °C	31.0 °C	25.0 °C	151 mm	24 days	25 days
1960	27.9 °C	31.5 °C	25.2 °C	249 mm	26 days	25 days
1959	27.6 °C	31.1 °C	25.2 °C	235 mm	24 days	24 days
1958	27.3 °C	30.6 °C	24.8 °C	273 mm	19 days	29 days
1957	27.3 °C	30.5 °C	25.0 °C	340 mm	21 days	27 days
1956	27.3 °C	31.0 °C	24.8 °C	296 mm	26 days	29 days
1955	27.4 °C	31.0 °C	24.8 °C	357 mm	26 days	30 days
1954	27.1 °C	30.3 °C	24.9 °C	258 mm	18 days	28 days
1953	27.1 °C	30.9 °C	24.4 °C	242 mm	24 days	27 days
1952	27.5 °C	31.1 °C	25.0 °C	128 mm	25 days	25 days
1951	27.9 °C	31.3 °C	25.5 °C	166 mm	28 days	24 days
1950	27.4 °C	31.0 °C	25.3 °C	307 mm	24 days	29 days
1949	27.6 °C	31.1 °C	24.9 °C	152 mm	24 days	26 days
1948	26.8 °C	30.1 °C	24.1 °C	287 mm	20 days	30 days
1947	27.2 °C	30.5 °C	24.4 °C	189 mm	22 days	27 days
1946	26.8 °C	30.1 °C	24.2 °C	241 mm	17 days	27 days
1945	27.2 °C	30.4 °C	24.7 °C	211 mm	21 days	29 days
1944	27.3 °C	30.3 °C	24.7 °C	240 mm	20 days	29 days
1943	26.7 °C	29.5 °C	24.1 °C	296 mm	8 days	28 days
1942	26.8 °C	30.2 °C	24.2 °C	181 mm	21 days	29 days
1941	26.1 °C	29.3 °C	23.8 °C	241 mm	6 days	27 days
1940	26.0 °C	29.0 °C	23.9 °C	362 mm	9 days	28 days

September records

Hottest day

38.4 °C

September 17, 2001 estimate

Nearby station: 39.4 °C on September 13, 1997 measured

Coldest night

22.5 °C

September 30, 1941 estimate

Nearby station: 20.6 °C on September 16, 1955 measured

Wettest day

160 mm

September 6, 2012 estimate

The weather on your birthday in Bangkok

Any day since 1940: high, low, rain, snow, and how warm it was compared with the same date in every other year.

Questions & answers

How warm is Bangkok in September?

Highs average 32.5 °C and lows 26.1 °C. A typical September brings 28 hot days (30 °C or more) and 0 frost days.

Does it rain a lot in Bangkok in September?

About 237 mm falls in September, over some 25 days with at least 1 mm. The wettest September was 2012 (530 mm), the driest 1952 (128 mm).

What was the warmest September in Bangkok?

2001, with a mean temperature of 29.7 °C. The coldest was 1940 (26.0 °C). The last one, 2025, ranks 13 of 86.