Kalasin weather in May

In May, Kalasin sees average daytime highs of 34°C and overnight lows near 26°C, with 183 mm of rain across 20.7 wet days and about 12.8 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 35°C in the first days to 34°C by the end. The sky is clear or mostly clear about 12% 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 Kalasin's 8th-clearest and 11th-windiest month. For the whole year in context, see Kalasin's year-round climate.

Daytime high
34°
3rd warmest
Overnight low
26°
12th coldest
Rainfall
183 mm
20.7 wet days
Daylight
12 h 48 min
5:39 AM – 6:25 PM
Cloud cover
77%
8th clearest
Wind
8 km/h
11th windiest
Solar energy
5.5 kWh/m²
Travel score
2.1
out of 10

Kalasin is থাইল্যান্ডের কালাসিন প্রদেশের শহর.

Density
3,249/km²
people per km²
Founded
1937

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 35°C in the first days to 34°C by the end.

A typical May day in Kalasin 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 37°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
113426
123426
133426
143426
153426
163426
173426
183426
193426
203426
213426
223426
233426
243426
253426
263426
273426
283426
293426
303426
313426

How May really feels in Kalasin

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.

Kalasin 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
Jan30° / 18°61.711.16.2
Feb32° / 20°112.311.44.9
Mar35° / 23°376.311.93.1
Apr36° / 26°691112.42.2
May34° / 26°18320.712.82.1
Jun33° / 26°16720.7132.3
Jul32° / 26°20622.712.92.6
Aug32° / 25°25025.212.62.5
Sep31° / 25°24623.612.12.8
Oct31° / 24°10412.311.64.2
Nov31° / 21°223.211.25.5
Dec30° / 19°51.1116.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24852
34654
44555
54357
64258
74060
83862
93565
103367
113169
122971
132773
142575
152377
162179
171981
181882
191783
201684
211486
221486
231486
241387
251387
261387
271387
281387
291189
301090
311090

Chance of precipitation in May

Any precipitation

Kalasin gets around 183 mm of rain over 20.7 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 66% 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 (%)
154
255
356
457
558
659
760
861
962
1062
1163
1264
1365
1466
1566
1667
1768
1869
1969
2070
2171
2271
2372
2472
2573
2674
2774
2875
2975
3075
3175

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1186922
2186724
3076726
4066628
5066430
6056332
7056134
8045937
9045838
10035740
11035542
12035443
13035245
14025246
15025147
16024949
17024850
18014752
19014653
20014554
21014356
22014257
23014158
24004060
25003862
26003664
27003466
28003367
29003169
30002971
31002872

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
298calm
308calm
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 6:21 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:466:21
212.65:456:21
312.65:456:21
412.65:446:21
512.65:446:22
612.65:436:22
712.75:436:22
812.75:426:23
912.75:426:23
1012.75:416:23
1112.75:416:24
1212.75:416:24
1312.75:406:24
1412.75:406:25
1512.85:406:25
1612.85:396:25
1712.85:396:25
1812.85:396:26
1912.85:386:26
2012.85:386:27
2112.85:386:27
2212.85:386:27
2312.85:376:28
2412.85:376:28
2512.95:376:28
2612.95:376:29
2712.95:376:29
2812.95:376:29
2912.95:376:30
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 5.5 kWh/m².

For context, solar energy here swings from a low near 4.45 kWh/m² to a high of 6.09 kWh/m² in April across the year — May's 5.5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.6Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Kalasin

In seasonPeak

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

Kalasin'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 Kalasin?

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

2.1
Sightseeing
12th-best month of the year
4.3
Beach & pool
11th-best month of the year

May is a weaker month for outdoor sightseeing in Kalasin.

What to pack for Kalasin in May

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

In May, Kalasin 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 Kalasin 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 Kalasin 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 Kalasin 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 Kalasin 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 Kalasin?

Kalasin sits at 16.4°N, 103.5°E, 152 m above sea level, in Thailand. The nearest listed city is Kamalasai, 13 km away.

Topography around Kalasin

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

Within 3 km, the terrain around Kalasin has only modest variations in elevation — a maximum elevation change of 23 m around an average of 144 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 89 m; within 80 km, significant variations in elevation — a maximum elevation change of 528 m.

The land around Kalasin is covered by trees (36%), cropland (32%) and artificial surfaces (25%) within 3 km, cropland (68%) and trees (22%) within 16 km, and cropland (73%) and trees (22%) within 80 km.

3 km
23 m
16 km
89 m
80 km
528 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Kamalasai 13 km · Nong Kung Si 33 km · Maha Sarakham 35 km · Roi Et 45 km · Kuchinarai 59 km · Ban Selaphum 66 km · Khao Wong 69 km · Khon Kaen 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 Kalasin (16.4328°, 103.5066°, elevation 152 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).