Kamalasai weather in May

In May, Kamalasai sees average daytime highs of 34°C and overnight lows near 26°C, with 188 mm of rain across 21.2 wet days and about 12.8 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°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 36 min at the start of May to 12 h 54 min by month's end. Set against the rest of the year, May is Kamalasai's 8th-clearest and 11th-windiest month. For the whole year in context, see Kamalasai's year-round climate.

Daytime high
34°
3rd warmest
Overnight low
26°
11th coldest
Rainfall
188 mm
21.2 wet days
Daylight
12 h 48 min
5:39 AM – 6:25 PM
Cloud cover
78%
8th clearest
Wind
8 km/h
11th windiest
Solar energy
5.58 kWh/m²
Travel score
2.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical May day in Kamalasai reaches about 34°C in the afternoon and slips back to 26°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 38°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13526
23526
33526
43526
53526
63526
73526
83526
93526
103526
113526
123526
133526
143426
153426
163426
173426
183426
193426
203426
213426
223426
233426
243426
253426
263426
273426
283426
293426
303426
313426

How May really feels in Kamalasai

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.

Kamalasai 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
Jan31° / 18°71.711.15.9
Feb33° / 20°122.411.54.6
Mar35° / 23°406.811.92.9
Apr36° / 26°7211.412.42.0
May34° / 26°18821.212.82.0
Jun33° / 26°16820.5132.2
Jul33° / 26°20223.412.92.4
Aug32° / 25°24724.812.52.5
Sep32° / 25°25324.212.12.7
Oct31° / 24°11112.511.64.0
Nov31° / 21°243.411.25.2
Dec30° / 19°61.4116.2

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 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
34654
44357
54159
64060
73862
83763
93565
103268
113070
122872
132674
142476
152278
162080
171981
181783
191783
201585
211585
221486
231387
241387
251387
261387
271387
281387
291387
301288
311189

Chance of precipitation in May

Any precipitation

Kamalasai gets around 188 mm of rain over 21.2 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 68% and peaks near 74% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
156
257
358
459
560
661
762
863
964
1065
1166
1267
1367
1468
1569
1669
1770
1870
1971
2071
2171
2272
2372
2472
2573
2673
2773
2874
2974
3074
3174

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 48% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1196723
2186625
3086527
4076429
5066331
6066133
7056035
8055837
9045739
10045640
11035542
12035443
13035344
14035146
15025147
16024949
17024850
18024652
19014554
20014455
21014356
22014257
23014059
24013960
25013762
26003664
27003466
28003268
29003169
30003070
31002971

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
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 12 h 54 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 5:46 AM to 5:36 AM, and sunset from 6:20 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:466:20
212.65:456:21
312.65:446:21
412.65:446:21
512.65:436:21
612.65:436:22
712.75:436:22
812.75:426:22
912.75:426:23
1012.75:416:23
1112.75:416:23
1212.75:406:23
1312.75:406:24
1412.75:406:24
1512.75:396:24
1612.85:396:25
1712.85:396:25
1812.85:396:25
1912.85:386:26
2012.85:386:26
2112.85:386:26
2212.85:386:27
2312.85:376:27
2412.85:376:27
2512.85:376:28
2612.95:376:28
2712.95:376:29
2812.95:376:29
2912.95:366:29
3012.95:366:30
3112.95:366:30

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.58 kWh/m².

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.13 kWh/m² in April across the year — May's 5.58 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
145.6Bright
155.6Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
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 Kamalasai

In seasonPeak

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

Kamalasai's monsoon runs May–September, 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 Kamalasai?

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

2.0
Sightseeing
11th-best month of the year
4.1
Beach & pool
11th-best month of the year

May is a weaker month for outdoor sightseeing in Kamalasai.

What to pack for Kamalasai in May

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

In May, Kamalasai sees daytime highs around 34°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Kamalasai 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 Kamalasai peaks around August 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 10UV 13Dec 12UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr10Very high
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Kamalasai 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 Kamalasai is worst in March — around 52 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (December, 22 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1751 µg/m³Dec 1022 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb39Poor
Mar52Poor
Apr41Poor
May30Moderate
Jun23Moderate
Jul24Moderate
Aug25Moderate
Sep27Moderate
Oct27Moderate
Nov22Moderate
Dec22Moderate
Location & terrain

Where is Kamalasai?

Kamalasai sits at 16.3°N, 103.6°E, 146 m above sea level, in Thailand. The nearest listed city is Kalasin, 13 km away.

Topography around Kamalasai

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

Within 3 km, the terrain around Kamalasai has only modest variations in elevation — a maximum elevation change of 27 m around an average of 140 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, significant variations in elevation — a maximum elevation change of 531 m.

The land around Kamalasai is covered by cropland (60%) and trees (28%) within 3 km, cropland (70%) and trees (22%) within 16 km, and cropland (73%) and trees (22%) within 80 km.

3 km
27 m
16 km
71 m
80 km
531 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Kalasin 13 km · Roi Et 32 km · Maha Sarakham 34 km · Nong Kung Si 45 km · Ban Selaphum 54 km · Kuchinarai 55 km · Khao Wong 68 km · Kaset Wisai 76 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 Kamalasai (16.3384°, 103.5756°, elevation 146 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).