Bang Saphan weather in May

In May, Bang Saphan sees average daytime highs of 31°C and overnight lows near 26°C, with 169 mm of rain across 24.5 wet days and about 12.5 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 8% 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 36 min by month's end. Set against the rest of the year, May is Bang Saphan's 8th-clearest and 7th-windiest month. For the whole year in context, see Bang Saphan's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
26°
12th coldest
Rainfall
169 mm
24.5 wet days
Daylight
12 h 30 min
6:03 AM – 6:34 PM
Cloud cover
80%
8th clearest
Wind
10 km/h
7th windiest
Solar energy
5.3 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 31°C through the month.

A typical May day in Bang Saphan reaches about 31°C in the afternoon and slips back to 26°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°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)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103126
113126
123126
133126
143126
153126
163126
173126
183126
193126
203126
213126
223126
233126
243126
253126
263126
273126
283126
293126
303026
313026

How May really feels in Bang Saphan

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
heat index over the day's high
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.

Bang Saphan weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°445.711.46.9
Feb29° / 24°235.111.66.4
Mar30° / 25°7310.811.95.2
Apr31° / 26°941612.23.9
May31° / 26°16924.512.53.0
Jun30° / 26°15923.112.63.2
Jul30° / 25°18325.112.63.2
Aug30° / 25°1802512.43.2
Sep29° / 25°20425.712.13.1
Oct29° / 25°23825.511.73.5
Nov29° / 25°10612.411.55.2
Dec28° / 24°425.811.46.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% 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 81%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23664
33466
43466
53169
63070
72872
82773
92575
102476
112278
122179
131981
141981
151783
161783
171585
181486
191387
201387
211288
221189
231189
241189
251189
26991
27991
28991
29991
30892
31892

Chance of precipitation in May

Any precipitation

Bang Saphan gets around 169 mm of rain over 24.5 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 79% and peaks near 82% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
271
373
474
575
675
776
877
977
1078
1179
1279
1380
1480
1580
1680
1780
1880
1980
2080
2181
2281
2381
2481
2581
2682
2782
2882
2982
3082
3182

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1793
2793
3793
4793
5793
6793
7793
8793
9793
10793
11793
12793
13694
14694
15694
16694
17694
18694
19694
20694
21595
22595
23595
24595
25595
26595
27595
28595
29595
30595
31595

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 11 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
79calm
89calm
99calm
109calm
119calm
129calm
139calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 min at the start of May to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 6:07 AM to 6:01 AM, and sunset from 6:31 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:076:31
212.46:076:31
312.46:076:31
412.46:066:31
512.46:066:31
612.46:066:32
712.46:056:32
812.56:056:32
912.56:056:32
1012.56:046:32
1112.56:046:33
1212.56:046:33
1312.56:036:33
1412.56:036:33
1512.56:036:33
1612.56:036:34
1712.56:036:34
1812.56:026:34
1912.56:026:34
2012.56:026:35
2112.56:026:35
2212.66:026:35
2312.66:026:35
2412.66:026:36
2512.66:016:36
2612.66:016:36
2712.66:016:36
2812.66:016:37
2912.66:016:37
3012.66:016:37
3112.66:016:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.3 kWh/m².

For context, solar energy here swings from a low near 4.28 kWh/m² to a high of 6.12 kWh/m² in April across the year — May's 5.3 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in May

Hazard calendar for Bang Saphan

In seasonPeak

In May, Bang Saphan sits inside its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.

Bang Saphan sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

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

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

Is May a good time to visit Bang Saphan?

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

3.0
Sightseeing
12th-best month of the year
4.4
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Bang Saphan.

What to pack for Bang Saphan in May

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

In May, Bang Saphan sees daytime highs around 31°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Bang Saphan in May

The nearest coast averages about 30°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 16 km away) is warmest in May at about 30°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
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Bang Saphan 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 Bang Saphan peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 18UV 14Nov 23UV 9
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Bang Saphan 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 Bang Saphan is worst in January — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (September, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateJan 2121 µg/m³Sep 1611 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb20Moderate
Mar19Moderate
Apr19Moderate
May14Moderate
Jun12Moderate
Jul14Moderate
Aug12Good
Sep11Good
Oct11Good
Nov15Moderate
Dec17Moderate
Location & terrain

Where is Bang Saphan?

Bang Saphan sits at 11.2°N, 99.5°E, 12 m above sea level, in Thailand. The nearest listed city is Prachuap Khiri Khan, 74 km away.

Kui BuriSam Roi YotKo TaoPran BuriLang SuanHua Hin

Topography around Bang Saphan

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

Within 3 km, the terrain around Bang Saphan has only modest variations in elevation — a maximum elevation change of 130 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 441 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,215 m.

The land around Bang Saphan is covered by trees (62%) within 3 km, trees (51%) and water (43%) within 16 km, and trees (62%) and water (36%) within 80 km.

3 km
130 m
16 km
441 m
80 km
1,215 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Prachuap Khiri Khan 74 km · Chumphon 88 km · Kui Buri 104 km · Sam Roi Yot 124 km · Ko Tao 130 km · Pran Buri 137 km · Lang Suan 149 km · Hua Hin 159 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 Bang Saphan (11.2126°, 99.5117°, elevation 12 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).