Chai Nat weather in May

In May, Chai Nat sees average daytime highs of 36°C and overnight lows near 27°C, with 151 mm of rain across 21.7 wet days and about 12.7 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 36°C through the month. The sky is clear or mostly clear about 10% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Chai Nat's 8th-clearest and 7th-windiest month. For the whole year in context, see Chai Nat's year-round climate.

Daytime high
36°
3rd warmest
Overnight low
27°
12th coldest
Rainfall
151 mm
21.7 wet days
Daylight
12 h 42 min
5:55 AM – 6:37 PM
Cloud cover
76%
8th clearest
Wind
8 km/h
7th windiest
Solar energy
5.71 kWh/m²
Travel score
1.3
out of 10

Chai Nat is town in Chai Nat province, Thailand.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 36°C through the month.

A typical May day in Chai Nat reaches about 36°C in the afternoon and slips back to 27°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 40°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
13727
23727
33727
43727
53727
63727
73727
83727
93727
103727
113627
123627
133627
143627
153627
163627
173627
183627
193627
203627
213627
223627
233627
243627
253627
263627
273627
283627
293627
303627
313627

How May really feels in Chai Nat

Once humidity and wind are folded in, May averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Chai Nat weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 21°102.211.24.6
Feb35° / 23°122.111.53.2
Mar37° / 25°396.611.91.8
Apr38° / 27°7812.812.31.1
May36° / 27°15121.712.71.3
Jun36° / 27°12422.112.91.5
Jul35° / 27°13722.912.81.7
Aug34° / 26°17924.112.51.9
Sep33° / 26°26025.512.12.0
Oct32° / 25°17918.811.73.0
Nov32° / 23°325.211.34.4
Dec32° / 21°91.711.15.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 76%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24654
34456
44357
54060
63961
73763
83565
93367
103169
112872
122674
132674
142377
152179
162080
171882
181783
191585
201585
211486
221486
231387
241387
251288
261288
271288
281189
291090
301090
31991

Chance of precipitation in May

Any precipitation

Chai Nat gets around 151 mm of rain over 21.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 70% and peaks near 75% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
158
259
360
461
562
663
764
865
966
1067
1168
1269
1370
1471
1572
1673
1773
1874
1974
2075
2175
2275
2375
2475
2575
2675
2775
2875
2975
3075
3175

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the miserable band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
154549
254451
354253
444056
543858
643759
733661
833562
933463
1033364
1123365
1223365
1323266
1423365
1513366
1613366
1713465
1813564
1913663
2013663
2113762
2213762
2313861
2413861
2513861
2613960
2713960
2813960
2913960
3013861
3113861

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
47calm
57calm
67calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 6:01 AM to 5:52 AM, and sunset from 6:33 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:016:33
212.56:006:33
312.66:006:33
412.65:596:34
512.65:596:34
612.65:586:34
712.65:586:34
812.65:576:35
912.65:576:35
1012.65:576:35
1112.75:566:35
1212.75:566:36
1312.75:566:36
1412.75:556:36
1512.75:556:37
1612.75:556:37
1712.75:546:37
1812.75:546:37
1912.75:546:38
2012.75:546:38
2112.85:536:38
2212.85:536:39
2312.85:536:39
2412.85:536:39
2512.85:536:40
2612.85:536:40
2712.85:526:40
2812.85:526:41
2912.85:526:41
3012.85:526:41
3112.85:526:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.71 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.29 kWh/m² in April across the year — May's 5.71 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.0Intense
36.0Intense
46.0Bright
56.0Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Chai Nat

In seasonPeak

In May, Chai Nat sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Chai Nat's monsoon runs May–October, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Chai Nat?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.3
Sightseeing
11th-best month of the year
3.3
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Chai Nat.

What to pack for Chai Nat in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Chai Nat sees daytime highs around 36°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Chai Nat in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chai Nat peaks around August 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 15UV 14Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Chai Nat in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Chai Nat is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (June, 17 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1455 µg/m³Jun 2217 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb48Poor
Mar56Unhealthy
Apr40Poor
May26Moderate
Jun17Moderate
Jul18Moderate
Aug19Moderate
Sep22Moderate
Oct28Moderate
Nov28Moderate
Dec30Moderate
Location & terrain

Where is Chai Nat?

Chai Nat sits at 15.2°N, 100.1°E, 26 m above sea level, in Thailand. The nearest listed city is Uthai Thani, 24 km away.

Topography around Chai Nat

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chai Nat.

Within 3 km, the terrain around Chai Nat has only modest variations in elevation — a maximum elevation change of 107 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 233 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,204 m.

The land around Chai Nat is covered by cropland (36%) and trees (35%) within 3 km, cropland (74%) within 16 km, and cropland (79%) within 80 km.

3 km
107 m
16 km
233 m
80 km
1,204 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Uthai Thani 24 km · Bang Racham 39 km · Thap Than 39 km · Sing Buri 45 km · Nakhon Sawan 58 km · Wiset Chaichan 70 km · Lop Buri 71 km · Lat Yao 72 km

Thailand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$8,057
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
4.8
per 100k, 2011
Road deaths
32.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 402
Religion
Buddhist 93%Muslim 5%Christian 1%other 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Chai Nat (15.1864°, 100.1235°, elevation 26 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).