Ban Chang weather in May

In May, Ban Chang sees average daytime highs of 32°C and overnight lows near 28°C, with 118 mm of rain across 17.3 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°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 24 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Ban Chang's 8th-clearest and 4th-windiest month. For the whole year in context, see Ban Chang's year-round climate.

Daytime high
32°
2nd warmest
Overnight low
28°
12th coldest
Rainfall
118 mm
17.3 wet days
Daylight
12 h 36 min
5:54 AM – 6:30 PM
Cloud cover
80%
8th clearest
Wind
11 km/h
4th windiest
Solar energy
5.57 kWh/m²
Travel score
3.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical May day in Ban Chang reaches about 32°C in the afternoon and slips back to 28°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, May runs on par with April and on par with June.

25°28°30°33°35°151015202531
Avg high (°C)Avg low (°C)
13328
23328
33328
43328
53328
63328
73328
83328
93328
103328
113228
123228
133228
143228
153228
163228
173228
183228
193228
203228
213228
223228
233228
243228
253228
263228
273228
283228
293228
303228
313228

How May really feels in Ban Chang

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.

Ban Chang weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°234.511.35.5
Feb31° / 25°183.911.65.4
Mar32° / 26°466.811.94.7
Apr33° / 27°599.312.33.8
May32° / 28°11817.312.63.0
Jun32° / 27°10217.512.73.0
Jul32° / 27°10117.412.73.2
Aug32° / 27°10017.212.43.3
Sep31° / 27°18520.812.13.0
Oct31° / 26°22122.911.73.2
Nov31° / 25°517.911.44.7
Dec31° / 24°14311.35.5

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 11% of May, with mostly cloudy or overcast conditions the remaining 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23862
33763
43466
53367
63070
73070
82773
92575
102476
112278
122179
132179
142080
151882
161882
171882
181684
191585
201585
211486
221387
231387
241387
251288
261288
271288
281090
291090
30991
31991

Chance of precipitation in May

Any precipitation

Ban Chang gets around 118 mm of rain over 17.3 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 56% and peaks near 63% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
140
241
342
443
544
645
747
848
950
1052
1153
1255
1356
1458
1559
1660
1761
1862
1962
2062
2163
2263
2363
2462
2562
2662
2762
2862
2961
3062
3162

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1694
2595
3595
4595
5595
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16595
17496
18496
19496
20496
21496
22496
23496
24496
25496
26496
27397
28397
29397
30397
31397

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 min at the start of May to 12 h 42 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 6:00 AM to 5:53 AM, and sunset from 6:26 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:006:26
212.55:596:27
312.55:596:27
412.55:586:27
512.55:586:27
612.55:586:27
712.55:576:27
812.55:576:28
912.55:566:28
1012.55:566:28
1112.55:566:28
1212.65:566:29
1312.65:556:29
1412.65:556:29
1512.65:556:29
1612.65:546:30
1712.65:546:30
1812.65:546:30
1912.65:546:30
2012.65:546:31
2112.65:536:31
2212.65:536:31
2312.65:536:31
2412.65:536:32
2512.75:536:32
2612.75:536:32
2712.75:536:33
2812.75:536:33
2912.75:536:33
3012.75:536:33
3112.75:536:34

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.57 kWh/m².

For context, solar energy here swings from a low near 4.76 kWh/m² to a high of 6.22 kWh/m² in April across the year — May's 5.57 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.9Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Hazard calendar for Ban Chang

In seasonPeak

In May, Ban Chang sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Ban Chang sits in the Pacific typhoon belt; the season peaks July–October.

Ban Chang's rainy season runs May–October, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Ban Chang?

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

3.0
Sightseeing
10th-best month of the year
5.1
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Ban Chang.

What to pack for Ban Chang in May

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

In May, Ban Chang sees daytime highs around 32°C and nights near 28°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Ban Chang in May

The nearest coast averages about 31°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 km away) is warmest in May at about 31°C and coldest in January near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Ban Chang in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ban Chang peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 14Dec 14UV 9
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov9Very high
Dec9Very high

Air quality in Ban Chang 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 Ban Chang is worst in January — around 39 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (June, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateJan 2439 µg/m³Jun 2017 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb39Poor
Mar29Moderate
Apr26Moderate
May20Moderate
Jun17Moderate
Jul18Moderate
Aug17Moderate
Sep21Moderate
Oct31Moderate
Nov30Moderate
Dec29Moderate
Location & terrain

Where is Ban Chang?

Ban Chang sits at 12.7°N, 101.1°E, 49 m above sea level, in Thailand. The nearest listed city is Sattahip, 18 km away.

Topography around Ban Chang

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

Within 3 km, the terrain around Ban Chang has only modest variations in elevation — a maximum elevation change of 242 m around an average of 61 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 414 m; within 80 km, large variations in elevation — a maximum elevation change of 1,083 m.

The land around Ban Chang is covered by trees (41%), artificial surfaces (27%) and cropland (20%) within 3 km, trees (41%) and water (24%) within 16 km, and water (52%) and trees (34%) within 80 km.

3 km
242 m
16 km
414 m
80 km
1,083 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Sattahip 18 km · Rayong 23 km · Pattaya 30 km · Bang Lamung 38 km · Ban Talat Bueng 39 km · Ban Phe 43 km · Si Racha 52 km · Klaeng 65 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 Ban Chang (12.725°, 101.0555°, elevation 49 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).