Phon Charoen weather in May

In May, Phon Charoen sees average daytime highs of 33°C and overnight lows near 25°C, with 268 mm of rain across 23.5 wet days and about 12.8 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 34°C in the first days to 32°C by the end. The sky is clear or mostly clear about 14% 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 13 hours by month's end. Set against the rest of the year, May is Phon Charoen's 8th-clearest and 11th-windiest month. For the whole year in context, see Phon Charoen's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
25°
10th coldest
Rainfall
268 mm
23.5 wet days
Daylight
12 h 48 min
5:38 AM – 6:29 PM
Cloud cover
76%
8th clearest
Wind
6 km/h
11th windiest
Solar energy
5.06 kWh/m²
Travel score
2.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 34°C in the first days to 32°C by the end.

A typical May day in Phon Charoen reaches about 33°C in the afternoon and slips back to 25°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 36°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)
13425
23425
33425
43425
53425
63425
73425
83425
93425
103425
113325
123325
133325
143325
153325
163325
173325
183325
193325
203325
213325
223325
233325
243325
253225
263225
273225
283225
293225
303225
313225

How May really feels in Phon Charoen

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.

Phon Charoen 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
Jan29° / 17°101.6117.0
Feb31° / 19°172.411.45.7
Mar33° / 22°376.111.94.0
Apr34° / 25°7511.412.42.8
May33° / 25°26823.512.82.3
Jun32° / 26°34126.313.12.3
Jul31° / 25°40028.2132.4
Aug31° / 25°41028.512.62.4
Sep31° / 25°29323.712.12.8
Oct32° / 24°8310.311.64.3
Nov31° / 21°172.611.25.7
Dec29° / 18°80.910.97.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% 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 (%)
15149
25050
34753
44654
54456
64258
74060
83862
93664
103565
113367
123070
132971
142773
152575
162476
172278
182080
191981
201882
211684
221585
231585
241486
251387
261387
271288
281189
291189
301090
31991

Chance of precipitation in May

Any precipitation

Phon Charoen gets around 268 mm of rain over 23.5 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 76% and peaks near 90% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
154
255
356
458
559
661
762
864
966
1068
1170
1272
1373
1475
1577
1678
1780
1881
1982
2084
2185
2286
2387
2488
2588
2689
2789
2890
2990
3090
3190

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1175240
2175042
3164944
4164647
5154449
6154252
7153955
8153658
9153460
10153163
11152965
12142768
13142570
14142372
15142174
16142075
17031978
18031780
19031780
20021682
21021583
22021484
23021385
24011287
25011188
26011188
27011089
2801990
2901891
3000793
3100793

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:45 AM to 5:35 AM, and sunset from 6:24 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:456:24
212.75:456:24
312.75:446:24
412.75:446:25
512.75:436:25
612.75:426:25
712.75:426:26
812.75:426:26
912.85:416:26
1012.85:416:27
1112.85:406:27
1212.85:406:27
1312.85:396:28
1412.85:396:28
1512.85:396:29
1612.85:386:29
1712.95:386:29
1812.95:386:30
1912.95:376:30
2012.95:376:30
2112.95:376:31
2212.95:366:31
2312.95:366:32
2412.95:366:32
2512.95:366:32
2613.05:366:33
2713.05:356:33
2813.05:356:33
2913.05:356:34
3013.05:356:34
3113.05:356:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.06 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 6.02 kWh/m² in April across the year — May's 5.06 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.5Bright
95.4Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in May

Hazard calendar for Phon Charoen

In seasonPeak

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

Phon Charoen'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 Phon Charoen?

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

2.3
Sightseeing
11th-best month of the year
4.2
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Phon Charoen.

What to pack for Phon Charoen in May

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

In May, Phon Charoen sees daytime highs around 33°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Phon Charoen in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Phon Charoen peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 11UV 13Dec 14UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr10Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7Very high

Air quality in Phon Charoen 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 Phon Charoen is worst in April — around 78 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (November, 16 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateApr 977 µg/m³Nov 1616 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb39Poor
Mar75Unhealthy
Apr78Unhealthy
May28Moderate
Jun20Moderate
Jul20Moderate
Aug20Moderate
Sep18Moderate
Oct18Moderate
Nov16Moderate
Dec18Moderate
Location & terrain

Where is Phon Charoen?

Phon Charoen sits at 18.0°N, 103.2°E, 170 m above sea level, in Thailand. The nearest listed city is Ban Dung, 38 km away.

Topography around Phon Charoen

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

Within 3 km, the terrain around Phon Charoen has only modest variations in elevation — a maximum elevation change of 43 m around an average of 171 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,873 m.

The land around Phon Charoen is covered by trees (46%) and cropland (41%) within 3 km, trees (51%) and cropland (39%) within 16 km, and trees (53%) and cropland (39%) within 80 km.

3 km
43 m
16 km
67 m
80 km
1,873 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Ban Dung 38 km · Nong Khai 48 km · Vientiane 60 km · Tha Bo 65 km · Pakxan 66 km · Sawang Daen Din 69 km · Udon Thani 80 km · Borikhan 83 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 Phon Charoen (18.0333°, 103.1667°, elevation 170 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).