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Thailand · 1991–2020

Best time to visit
Bangkok.

December leads for comfortable weather in Bangkok: typically 32.3°C by day, 23°C at night, with 13 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortDecember

Typical high32.3°C

Typical low23°C

Rain in December13 mm

Comfort

December

December · January · February

58climate match

Beach

December

December · January · February

85climate match

Outdoors

December

December · January · February

40climate match

The weakest month is May, scoring 5 against December’s 58 — 300 mm of rain falls, and days average 35.1°C, 11° above the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

5732.7° / 23.2°

Feb

5033.6° / 24.8°

Mar

4034.7° / 26.3°

Apr

1535.8° / 27.2°

May

535.1° / 26.8°

Jun

534.1° / 26.3°

Jul

633.5° / 26.1°

Aug

533.3° / 25.8°

Sep

533.1° / 25.3°

Oct

533° / 25.1°

Nov

4333.1° / 24.6°

Dec

5832.3° / 23°

Monthly climate evidence for Bangkok — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	32.7°C	23.2°C	34 mm	1.4	11 h 24	57	Limited coverage
February	33.6°C	24.8°C	38 mm	2.9	11 h 40	50	Limited coverage
March	34.7°C	26.3°C	59 mm	4.4	12 h 01	40	Limited coverage
April	35.8°C	27.2°C	169 mm	8.7	12 h 25	15	Good coverage
May	35.1°C	26.8°C	300 mm	17.8	12 h 45	5	Strong coverage
June	34.1°C	26.3°C	252 mm	17.2	12 h 56	5	Strong coverage
July	33.5°C	26.1°C	244 mm	18	12 h 52	6	Strong coverage
August	33.3°C	25.8°C	267 mm	19.4	12 h 35	5	Strong coverage
September	33.1°C	25.3°C	379 mm	21.2	12 h 11	5	Strong coverage
October	33°C	25.1°C	362 mm	18.7	11 h 48	5	Strong coverage
November	33.1°C	24.6°C	80 mm	6.3	11 h 28	43	Good coverage
December	32.3°C	23°C	13 mm	0.9	11 h 19	58	Limited coverage

What has changed

Bangkok runs +1.4°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.9

Feb

+1.4

Mar

+1.3

Apr

+1.4

May

+2.0

Jun

+1.4

Jul

+1.2

Aug

+1.5

Sep

+1.2

Oct

+1.2

Nov

+2.0

Dec

+1.3

December daytime highs, 2011–2025. Last recorded: 33.1°C.

Records at BANGKOK METROPOLIS, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	37.6°C24 Jan 1999	9.9°C12 Jan 1955	171 mm31 Jan 1993	175 mm1993 · driest 0 mm in 1963	76
February	38.8°C16 Feb 2009	14.9°C13 Feb 1974	81 mm9 Feb 2021	137 mm2022 · driest 0 mm in 1973	76
March	40.1°C26 Mar 2013	15.7°C4 Mar 1986	88 mm30 Mar 1982	206 mm2011 · driest 0 mm in 1992	76
April	40.0°C20 Apr 1979	19.9°C10 Apr 1963	159 mm27 Apr 2009	361 mm2009 · driest 0 mm in 1983	76
May	41.0°C7 May 2023	21.1°C21 May 1963	249 mm9 May 1986	554 mm1964 · driest 30 mm in 1980	76
June	38.8°C7 Jun 2015	21.7°C3 Jun 2009	175 mm8 Jun 2015	481 mm2015 · driest 28 mm in 1967	76
July	38.4°C4 Jul 2021	21.9°C28 Jul 1954	160 mm16 Jul 1994	410 mm2011 · driest 23 mm in 2001	76
August	38.2°C13 Aug 2017	21.2°C1 Aug 1963	261 mm6 Aug 1994	575 mm1983 · driest 22 mm in 2001	75
September	37.4°C21 Sep 2015	21.3°C16 Sep 1955	157 mm18 Sep 1987	703 mm2022 · driest 0 mm in 1999	75
October	37.9°C9 Oct 2009	18.3°C30 Oct 1978	220 mm1 Oct 1993	610 mm2024 · driest 22 mm in 1979	75
November	38.8°C12 Nov 2009	14.2°C17 Nov 1971	117 mm16 Nov 1986	173 mm2005 · driest 0 mm in 2003	75
December	37.1°C5 Dec 1995	10.5°C30 Dec 1975	50 mm9 Dec 1993	103 mm1970 · driest 0 mm in 1957	74

Typical days per month at BANGKOK METROPOLIS, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	29	27	1
February	27	26	<1
March	29	29	2
April	29	29	2
May	30	29	6
June	29	28	6
July	29	29	6
August	29	29	6
September	29	28	9
October	29	28	8
November	29	27	2
December	29	25	<1

How often, not how much — every day in BANGKOK METROPOLIS’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	94%	6%	2%	2%	31.0–33.4°C
February	90%	10%	4%	4%	32.1–34.1°C
March	89%	12%	5%	5%	33.2–35.3°C
April	80%	20%	9%	17%	34.2–36.7°C
May	55%	46%	21%	60%	33.2–36.4°C
June	53%	48%	19%	63%	32.4–35.1°C
July	51%	50%	21%	70%	32.0–34.2°C
August	45%	56%	23%	76%	31.9–34.0°C
September	36%	64%	34%	89%	31.5–33.8°C
October	49%	52%	26%	59%	31.0–33.5°C
November	81%	20%	7%	14%	30.7–34.1°C
December	96%	5%	2%	<1%	30.2–33.4°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1951Each stripe is one year’s mean temperature against the 61-year average. Warmest: 2012. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1609350
NOAA station: TH000048455 · BANGKOK METROPOLIS
Station distance: 7.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 11 usable years
Daylight: Calculated from latitude 13.75°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

Validated places to explore

Tokyo→Reykjavik→Lisbon→London→

Best time to visitBangkok.

December

December

December

The whole year,without the guesswork.

Bangkok runs +1.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Bangkok.

The whole year,
without the guesswork.

Bangkok runs +1.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.