Det Udom climate — normals and trends

Det Udom (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.8 °C and it receives 1,475 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is April (29.4 °C on average) and the coldest is December (23.7 °C). Rainfall peaks in September.

Det Udom averages 0 frost days, 287 hot days (≥ 30 °C) and 177 rainy days per year.

Det Udom has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.6 °C (on 30 April 2024) and the coldest 8.5 °C (on 12 January 1955).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Det UdomUbon Ratchathani

coords
14.91°, 105.08°
period
19402025 · 86 yrs
AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthSeptemberDriest monthJanuary

Mean daily temperature

26.8°C

Average daily high

31.8°C

Average daily low

22.9°C

Annual rainfall

1,475mm

Sunshine / day

10.0h

Mean relative humidity

73%

Average peak wind

13.3km/h

Seasonal range

5.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

287 d/yr

Rainy days (≥ 1 mm)

177 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.2 °C

Average feels-like low

26.0 °C

Average peak gust

30.4 km/h

Tropical nights (≥ 20 °C)

302 d/yr

Solar radiation

18.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.62 · p = < 0.001

1940Each stripe is one year, from 1940 (left) to 2025 (right). Blue = colder than the period average, red = warmer.2025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

41.6 °C

30 April 2024

Coldest day

8.5 °C

12 January 1955

Wettest day

190 mm

21 September 1949

Windiest day

37.8 km/h

18 December 2022

Strongest gust

77.4 km/h

28 September 2022

Hottest feels-like

47.3 °C

8 April 2024

Coldest feels-like

5.4 °C

12 January 1955

Sunniest day

12.4 h

16 June 1948

YearHottest dayColdest dayAnnual meanRainfallHot daysFrost days
202538.3 °C25 April 202513.1 °C13 January 202527.1 °C1,615 mm3150
202441.6 °C30 April 202415.9 °C30 December 202428.3 °C1,339 mm3340
202340.5 °C7 May 202314.4 °C31 January 202327.8 °C1,638 mm3290
202237.3 °C14 March 202215.4 °C19 December 202227.1 °C1,921 mm3100
202138.1 °C31 March 202111.9 °C13 January 202127.3 °C1,483 mm2980
202039.4 °C9 May 202015.2 °C22 December 202027.8 °C1,483 mm3130
201939.8 °C2 May 201914.9 °C9 December 201927.9 °C1,445 mm3280
201838.7 °C14 April 201813.2 °C7 February 201827.4 °C1,373 mm3290
201737.8 °C14 March 201714.2 °C20 December 201727.4 °C1,425 mm3340
201641.2 °C15 April 201612.9 °C8 February 201627.9 °C1,445 mm3340
201540.5 °C20 April 201513.2 °C16 January 201528.0 °C1,177 mm3280
201438.2 °C2 April 201412.4 °C24 January 201427.2 °C1,389 mm3170
201339.6 °C6 April 201313.9 °C21 December 201327.3 °C1,534 mm3090
201239.3 °C26 April 201216.9 °C20 February 201227.6 °C1,300 mm3440
201137.6 °C7 March 201114.4 °C18 January 201126.6 °C1,559 mm2790
201039.4 °C13 April 201015.7 °C18 December 201027.8 °C1,363 mm3220
200937.2 °C23 February 200912.4 °C11 January 200926.8 °C1,673 mm3080
200837.9 °C21 April 200815.2 °C15 February 200826.5 °C1,460 mm2760
200739.3 °C1 April 200714.2 °C29 January 200727.2 °C1,645 mm2970
200638.1 °C13 April 200614.4 °C10 January 200627.4 °C1,526 mm3150
200538.8 °C6 May 200512.5 °C2 January 200527.3 °C1,282 mm3060
200437.5 °C2 March 200414.2 °C25 January 200427.1 °C1,305 mm3300
200338.3 °C13 April 200313.4 °C12 January 200327.3 °C1,414 mm3180
200238.0 °C15 March 200215.2 °C6 January 200227.5 °C1,649 mm3160
200140.0 °C10 April 200114.1 °C23 December 200127.4 °C1,411 mm3010
200037.1 °C9 April 200013.9 °C2 February 200026.8 °C1,685 mm2970
199937.4 °C20 March 199910.7 °C24 December 199926.6 °C1,429 mm2760
199840.0 °C14 April 199816.8 °C15 December 199828.1 °C1,264 mm3160
199736.9 °C30 March 199713.9 °C13 January 199727.0 °C1,559 mm3150
199638.7 °C31 March 199613.2 °C2 January 199626.7 °C1,629 mm2870
199538.9 °C27 April 199512.9 °C8 January 199527.0 °C1,320 mm2960
199438.3 °C3 May 199413.5 °C24 January 199426.9 °C1,483 mm3080
199338.1 °C4 April 199312.5 °C30 January 199326.6 °C1,392 mm2820
199239.1 °C21 April 199213.3 °C17 January 199226.9 °C1,474 mm2730
199139.6 °C19 April 199116.3 °C29 December 199127.3 °C1,399 mm2970
199039.0 °C23 April 199015.8 °C24 January 199027.1 °C1,754 mm3060
198939.5 °C23 April 198915.0 °C5 December 198926.8 °C1,601 mm2970
198838.6 °C20 March 198815.3 °C12 December 198827.0 °C1,610 mm2800
198739.0 °C13 April 198714.5 °C7 December 198727.3 °C1,432 mm3010
198638.0 °C15 March 198613.1 °C3 March 198626.5 °C2,006 mm2610
198537.9 °C10 April 198514.5 °C17 December 198526.7 °C1,423 mm3010
198439.0 °C10 April 198411.7 °C10 January 198426.6 °C1,463 mm2690
198340.6 °C13 April 198311.4 °C24 January 198327.3 °C1,491 mm2970
198238.0 °C24 March 198210.3 °C29 December 198226.7 °C1,426 mm2950
198138.7 °C2 April 198113.6 °C13 January 198126.8 °C1,672 mm2810
198038.8 °C6 April 198014.6 °C25 December 198027.2 °C1,990 mm3010
197938.8 °C13 April 197915.7 °C29 November 197927.3 °C1,580 mm3130
197837.1 °C3 April 197814.0 °C23 January 197826.6 °C1,934 mm2690
197737.2 °C6 June 197714.3 °C23 February 197726.6 °C1,442 mm2900
197637.7 °C17 April 197611.1 °C16 January 197626.1 °C1,704 mm2570
197538.5 °C16 April 197510.2 °C31 December 197526.2 °C1,844 mm2620
197436.3 °C8 March 197411.3 °C2 January 197426.2 °C1,611 mm2680
197339.3 °C12 April 197313.0 °C27 December 197327.0 °C1,317 mm2800
197239.7 °C24 May 197213.5 °C13 January 197226.6 °C1,691 mm2750
197137.1 °C4 April 197112.8 °C5 January 197125.9 °C1,322 mm2320
197037.6 °C14 March 197014.3 °C20 January 197026.8 °C1,081 mm2860
196938.0 °C22 March 196914.2 °C23 December 196926.9 °C1,187 mm2680
196838.1 °C1 April 196813.6 °C2 January 196826.6 °C1,501 mm3000
196737.5 °C4 April 196711.1 °C17 January 196726.1 °C1,098 mm2370
196636.8 °C13 March 196614.4 °C2 January 196626.6 °C1,606 mm2600
196537.3 °C29 April 196511.6 °C2 January 196526.3 °C1,490 mm2900
196437.9 °C11 April 196413.4 °C19 December 196426.4 °C1,598 mm2640
196338.6 °C21 April 19639.9 °C15 January 196325.9 °C1,542 mm2670
196237.0 °C21 March 196210.7 °C28 January 196225.9 °C1,599 mm2520
196137.3 °C13 April 196112.3 °C17 January 196126.5 °C1,738 mm2720
196039.4 °C28 April 196011.7 °C3 January 196026.6 °C1,728 mm2700
195938.2 °C13 June 195913.8 °C12 January 195926.9 °C1,271 mm2980
195839.5 °C25 April 195813.9 °C6 January 195826.6 °C1,498 mm2690
195737.9 °C15 May 195713.2 °C4 January 195726.5 °C1,697 mm2730
195637.6 °C24 March 195610.8 °C18 January 195625.9 °C1,527 mm2480
195539.3 °C18 April 19558.5 °C12 January 195526.3 °C1,182 mm2850
195437.7 °C16 April 195412.2 °C17 December 195426.6 °C963 mm3080
195334.9 °C28 March 195313.1 °C9 January 195326.3 °C1,272 mm2960
195237.0 °C12 April 195212.7 °C10 December 195226.3 °C1,586 mm2600
195137.9 °C10 April 195113.7 °C14 January 195126.6 °C965 mm2830
195038.9 °C24 April 195014.1 °C20 December 195026.4 °C1,068 mm2660
194937.2 °C15 March 194911.0 °C10 January 194926.4 °C1,693 mm2550
194838.6 °C13 March 194813.3 °C2 January 194826.1 °C1,421 mm2410
194737.8 °C24 April 194713.8 °C29 December 194726.8 °C1,053 mm3010
194637.8 °C5 April 194613.2 °C8 January 194626.5 °C1,026 mm2920
194537.0 °C4 March 194513.6 °C18 January 194525.8 °C1,180 mm2720
194437.6 °C8 April 194412.7 °C21 December 194426.2 °C1,436 mm2580
194336.9 °C24 March 194312.7 °C13 January 194325.3 °C1,375 mm1980
194235.6 °C25 March 194213.6 °C17 December 194225.8 °C1,343 mm2190
194136.3 °C1 March 194115.7 °C23 December 194126.1 °C1,613 mm2220
194036.4 °C10 March 194012.5 °C5 January 194025.4 °C1,715 mm1890

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Across the whole year

Average daily high
32.4 °C
+0.6 °C
Hot days (≥ 30 °C)
315 d/yr
+28
Frost days (< 0 °C)
0 d/yr
0
Annual rainfall
1616 mm
+141 mm

Month by month

Highvs. normalPrecipitationvs. normal
Jan30.4 °C-0.3 °C0 mm-4 mm
Feb33.7 °C+1.0 °C1 mm-12 mm
Mar34.5 °C+0.1 °C29 mm-12 mm
Apr36.1 °C+1.4 °C39 mm-46 mm
May34.1 °C+0.7 °C197 mm+27 mm
Jun32.5 °C+0.3 °C211 mm+8 mm
Jul31.6 °C+0.1 °C266 mm+33 mm
Aug32.0 °C+1.0 °C204 mm-59 mm
Sep31.1 °C+0.5 °C341 mm+52 mm
Oct31.5 °C+1.0 °C200 mm+70 mm
Nov29.8 °C-0.4 °C127 mm+88 mm
Dec31.4 °C+1.7 °C1 mm-6 mm

The year's extremes

Hottest day
38.3 °C
25 Apr 2025
Coldest day
13.1 °C
13 Jan 2025
Wettest day
49.6 mm
7 Nov 2025
Windiest day
35.7 km/h
19 Nov 2025
Strongest gust
63.4 km/h
23 Jul 2025
Hottest feels-like
44.5 °C
28 Apr 2025
Coldest feels-like
11.6 °C
13 Jan 2025
Sunniest day
12.1 h
7 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Det Udom?

Det Udom has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.8 °C and it receives 1,475 mm of precipitation per year.

What is the hottest day ever recorded in Det Udom?

The hottest day measured in Det Udom between 1940 and 2025 was 30 April 2024, reaching 41.6 °C.

What is the coldest day in Det Udom?

The coldest day measured in Det Udom between 1940 and 2025 was 12 January 1955, at 8.5 °C.

Does it snow in Det Udom?

Almost never: Det Udom sees virtually no snow, with about 0 frost days per year.

Has the climate of Det Udom warmed?

Yes: Det Udom warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Det Udom?

The wettest day measured in Det Udom between 1940 and 2025 was 21 September 1949, with 190 mm of rain in 24 hours.

What was the windiest day in Det Udom?

The windiest day measured in Det Udom between 1940 and 2025 was 18 December 2022, with winds reaching 37.8 km/h.

What is the warmest month in Det Udom?

The warmest month in Det Udom is April (29.4 °C on average); the coldest is December (23.7 °C).

How much does it rain in Det Udom?

Det Udom receives on average 1,475 mm of precipitation per year, spread over about 177 rainy days.

Is it sunny in Det Udom?

Det Udom gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Are there tropical nights in Det Udom?

Yes: Det Udom has on average 302 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Det Udom?

In Det Udom, between 1940 and 2025, the highest apparent temperature reached 47.3 °C on 8 April 2024, and the lowest was 5.4 °C on 12 January 1955.

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