Nakhon Sawan weather in May

In May, Nakhon Sawan sees average daytime highs of 36°C and overnight lows near 27°C, with 156 mm of rain across 21 wet days and about 12.7 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 36°C through the month. The sky is clear or mostly clear about 11% of the time in May, and the air most often feels miserable.

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 Nakhon Sawan's 8th-clearest and 5th-windiest month. For the whole year in context, see Nakhon Sawan's year-round climate.

Daytime high
36°
3rd warmest
Overnight low
27°
12th coldest
Rainfall
156 mm
21 wet days
Daylight
12 h 42 min
5:54 AM – 6:38 PM
Cloud cover
76%
8th clearest
Wind
8 km/h
5th windiest
Solar energy
5.66 kWh/m²
Travel score
1.3
out of 10

Nakhon Sawan is city in Nakhon Sawan province, Thailand.

Air quality
High
PM2.5 28 µg/m³ · 2019
Density
2,953/km²
people per km²

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 36°C through the month.

A typical May day in Nakhon Sawan reaches about 36°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 33°C and 40°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
13728
23728
33728
43728
53728
63727
73727
83727
93727
103727
113727
123627
133627
143627
153627
163627
173627
183627
193627
203627
213627
223627
233627
243627
253627
263627
273627
283627
293627
303627
313627

How May really feels in Nakhon Sawan

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.

Nakhon Sawan 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
Jan33° / 21°10211.24.6
Feb35° / 23°11211.53.2
Mar37° / 25°386.211.91.8
Apr38° / 27°6211.412.31.1
May36° / 27°1562112.71.3
Jun35° / 27°14723.312.91.5
Jul35° / 27°16123.512.81.8
Aug34° / 26°21525.112.51.9
Sep33° / 26°27225.912.12.0
Oct33° / 25°14317.111.63.1
Nov32° / 23°244.711.34.3
Dec32° / 21°81.211.15.2

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 14% of May, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34654
44555
54456
64159
74060
83862
93565
103466
113268
123070
132872
142674
152476
162377
172179
181981
191882
201783
211684
221585
231585
241387
251387
261387
271288
281189
291090
301090
31991

Chance of precipitation in May

Any precipitation

Nakhon Sawan gets around 156 mm of rain over 21 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 77% 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
1368
1468
1569
1670
1770
1871
1971
2071
2172
2272
2372
2473
2573
2673
2774
2875
2975
3076
3177

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
154749
244551
344254
444056
533859
633760
733562
823464
923365
1023266
1123167
1213069
1312970
1412970
1512871
1612871
1712871
1802872
1902773
2002773
2102674
2202674
2302575
2402575
2502476
2602476
2702377
2802377
2902278
3002278
3102278

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
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
318calm

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 6:00 AM to 5:51 AM, and sunset from 6:33 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:006:33
212.65:596:34
312.65:596:34
412.65:586:34
512.65:586:34
612.65:586:35
712.65:576:35
812.65:576:35
912.75:566:35
1012.75:566:36
1112.75:556:36
1212.75:556:36
1312.75:556:37
1412.75:546:37
1512.75:546:37
1612.75:546:38
1712.75:546:38
1812.75:536:38
1912.85:536:39
2012.85:536:39
2112.85:536:39
2212.85:526:40
2312.85:526:40
2412.85:526:40
2512.85:526:41
2612.85:526:41
2712.85:526:41
2812.85:516:42
2912.85:516:42
3012.85:516:42
3112.95:516:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.66 kWh/m².

For context, solar energy here swings from a low near 4.49 kWh/m² to a high of 6.25 kWh/m² in April across the year — May's 5.66 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Nakhon Sawan

In seasonPeak

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

Nakhon Sawan sits in the Pacific typhoon belt; the season peaks July–October.

Nakhon Sawan's monsoon runs May–October, when most of the year's rain falls.

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

Is May a good time to visit Nakhon Sawan?

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

1.3
Sightseeing
11th-best month of the year
3.3
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Nakhon Sawan.

What to pack for Nakhon Sawan in May

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

In May, Nakhon Sawan sees daytime highs around 36°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Nakhon Sawan 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 Nakhon Sawan peaks around August 15 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 15UV 13Dec 12UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr10Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec8Very high

Air quality in Nakhon Sawan 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 Nakhon Sawan is worst in March — around 41 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (June, 18 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Nakhon Sawan's WHO annual average of 28 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1240 µg/m³Jun 2218 µg/m³
PM2.5 (µg/m³)Level
Jan37Poor
Feb39Poor
Mar41Poor
Apr34Moderate
May25Moderate
Jun18Moderate
Jul18Moderate
Aug19Moderate
Sep22Moderate
Oct26Moderate
Nov27Moderate
Dec32Moderate
Location & terrain

Where is Nakhon Sawan?

Nakhon Sawan sits at 15.7°N, 100.1°E, 31 m above sea level, in Thailand. The nearest listed city is Lat Yao, 38 km away.

Topography around Nakhon Sawan

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

Within 3 km, the terrain around Nakhon Sawan has only modest variations in elevation — a maximum elevation change of 150 m around an average of 31 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 194 m; within 80 km, large variations in elevation — a maximum elevation change of 756 m.

The land around Nakhon Sawan is covered by artificial surfaces (37%), trees (26%) and cropland (20%) within 3 km, cropland (61%) within 16 km, and cropland (85%) within 80 km.

3 km
150 m
16 km
194 m
80 km
756 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Lat Yao 38 km · Thap Than 38 km · Uthai Thani 38 km · Bang Mun Nak 44 km · Khanu Woralaksaburi 50 km · Chai Nat 58 km · Taphan Hin 65 km · Thap Khlo 71 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 Nakhon Sawan (15.7047°, 100.1372°, elevation 31 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). 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).