Chai Badan weather in May

In May, Chai Badan sees average daytime highs of 35°C and overnight lows near 27°C, with 123 mm of rain across 18.6 wet days and about 12.7 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 11% of the time in May, and the air most often feels oppressive.

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 Badan's 8th-clearest and 9th-windiest month. For the whole year in context, see Chai Badan's year-round climate.

Daytime high
35°
3rd warmest
Overnight low
27°
12th coldest
Rainfall
123 mm
18.6 wet days
Daylight
12 h 42 min
5:51 AM – 6:33 PM
Cloud cover
76%
8th clearest
Wind
8 km/h
9th windiest
Solar energy
5.74 kWh/m²
Travel score
1.8
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical May day in Chai Badan reaches about 35°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 32°C and 38°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13627
23627
33627
43627
53627
63627
73627
83627
93627
103527
113527
123527
133527
143526
153526
163526
173526
183526
193526
203526
213526
223526
233526
243526
253526
263527
273527
283527
293527
303527
313527

How May really feels in Chai Badan

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 Badan weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 20°71.811.24.9
Feb34° / 22°10211.53.6
Mar36° / 25°385.811.92.4
Apr37° / 26°6411.312.31.7
May35° / 27°12318.612.71.8
Jun34° / 26°12619.912.92.0
Jul33° / 26°15422.112.82.3
Aug32° / 25°18824.612.52.3
Sep32° / 25°23024.212.12.5
Oct32° / 24°13015.211.73.5
Nov32° / 23°25411.34.6
Dec31° / 21°51.111.15.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 77%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24456
34357
44060
53961
63862
73565
83367
93169
102971
112773
122575
132377
142278
152080
161882
171783
181684
191585
201486
211486
221486
231387
241387
251486
261486
271387
281387
291387
301387
311387

Chance of precipitation in May

Any precipitation

Chai Badan gets around 123 mm of rain over 18.6 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 60% and peaks near 62% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
152
253
354
455
556
656
757
858
959
1060
1160
1261
1362
1462
1562
1662
1762
1862
1962
2062
2161
2261
2361
2461
2561
2661
2761
2861
2961
3061
3162

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
166232
266034
355936
455738
545640
645541
745442
835344
935245
1025246
1125147
1225147
1325048
1415049
1515049
1615049
1714950
1804951
1905050
2005050
2105050
2205149
2305149
2405149
2505248
2605248
2705347
2805347
2905347
3005446
3105446

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 5:57 AM to 5:48 AM, and sunset from 6:29 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:576:29
212.55:566:29
312.65:566:29
412.65:556:30
512.65:556:30
612.65:546:30
712.65:546:30
812.65:536:31
912.65:536:31
1012.65:536:31
1112.75:526:31
1212.75:526:32
1312.75:526:32
1412.75:516:32
1512.75:516:33
1612.75:516:33
1712.75:506:33
1812.75:506:33
1912.75:506:34
2012.75:506:34
2112.85:496:34
2212.85:496:35
2312.85:496:35
2412.85:496:35
2512.85:496:36
2612.85:486:36
2712.85:486:36
2812.85:486:37
2912.85:486:37
3012.85:486:37
3112.85:486:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.74 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.23 kWh/m² in April across the year — May's 5.74 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in May

Hazard calendar for Chai Badan

In seasonPeak

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

Chai Badan'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 Badan?

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

1.8
Sightseeing
11th-best month of the year
4.1
Beach & pool
10th-best month of the year

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

What to pack for Chai Badan in May

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

In May, Chai Badan sees daytime highs around 35°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Chai Badan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (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 Badan peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 14UV 13Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr11Extreme
May10Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Chai Badan 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 Badan is worst in March — around 47 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (November, 23 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1446 µg/m³Nov 2323 µg/m³
PM2.5 (µg/m³)Level
Jan35Poor
Feb44Poor
Mar47Poor
Apr40Poor
May32Moderate
Jun26Moderate
Jul26Moderate
Aug26Moderate
Sep27Moderate
Oct27Moderate
Nov23Moderate
Dec23Moderate
Location & terrain

Where is Chai Badan?

Chai Badan sits at 15.2°N, 101.1°E, 44 m above sea level, in Thailand. The nearest listed city is Wichian Buri, 51 km away.

Topography around Chai Badan

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

Within 3 km, the terrain around Chai Badan has only modest variations in elevation — a maximum elevation change of 104 m around an average of 51 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 554 m; within 80 km, large variations in elevation — a maximum elevation change of 1,074 m.

The land around Chai Badan is covered by cropland (43%) and trees (31%) within 3 km, cropland (64%) and trees (28%) within 16 km, and cropland (68%) and trees (27%) within 80 km.

3 km
104 m
16 km
554 m
80 km
1,074 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Wichian Buri 51 km · Pak Chong 63 km · Phra Phutthabat 64 km · Lop Buri 68 km · Dan Khun Thot 68 km · Kaeng Khoi 70 km · Amphoe Sikhiu 70 km · Saraburi 78 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 Badan (15.2°, 101.1333°, elevation 44 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).