Phetchabun weather in May

In May, Phetchabun sees average daytime highs of 33°C and overnight lows near 24°C, with 152 mm of rain across 20.2 wet days and about 12.8 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 10% 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 Phetchabun's 8th-clearest and 9th-windiest month. For the whole year in context, see Phetchabun's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
24°
12th coldest
Rainfall
152 mm
20.2 wet days
Daylight
12 h 48 min
5:49 AM – 6:35 PM
Cloud cover
78%
8th clearest
Wind
5 km/h
9th windiest
Solar energy
5.28 kWh/m²
Travel score
2.7
out of 10

Phetchabun is town in Phetchabun province, Thailand.

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 33°C through the month.

A typical May day in Phetchabun reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°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)
13424
23424
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224
313224

How May really feels in Phetchabun

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.

Phetchabun weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 17°8211.16.3
Feb32° / 19°122.511.45.3
Mar33° / 21°315.911.94.1
Apr34° / 23°5410.412.43.1
May33° / 24°15220.212.82.7
Jun31° / 24°17323.5132.7
Jul30° / 24°22425.812.92.9
Aug30° / 23°26227.612.62.8
Sep30° / 23°24725.612.12.9
Oct31° / 22°11314.211.64.2
Nov31° / 20°233.311.25.6
Dec29° / 17°81.3116.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 79%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24456
34258
44060
53862
63565
73466
83268
93169
102872
112575
122476
132377
142080
151981
161882
171684
181585
191387
201288
211288
221189
231189
24991
25991
26991
27892
28793
29694
30694
31694

Chance of precipitation in May

Any precipitation

Phetchabun gets around 152 mm of rain over 20.2 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 65% and peaks near 76% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
146
247
348
450
551
653
755
856
958
1060
1162
1264
1366
1467
1568
1669
1770
1871
1971
2072
2172
2273
2373
2473
2574
2674
2775
2875
2976
3076
3176

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

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
19838
298110
388111
478013
577914
667816
757817
847719
947620
1037522
1137423
1227424
1327325
1427226
1527127
1617227
1717128
1817128
1917029
2017029
2116930
2207030
2306931
2406931
2506832
2606832
2706733
2806634
2906634
3006535
3106535

Wind in May

Winds average 5 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:55 AM to 5:46 AM, and sunset from 6:30 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:556:30
212.65:556:30
312.65:546:31
412.65:546:31
512.65:536:31
612.65:536:31
712.75:526:32
812.75:526:32
912.75:516:32
1012.75:516:33
1112.75:506:33
1212.75:506:33
1312.75:506:34
1412.75:496:34
1512.85:496:34
1612.85:496:35
1712.85:486:35
1812.85:486:35
1912.85:486:36
2012.85:486:36
2112.85:476:36
2212.85:476:37
2312.85:476:37
2412.85:476:37
2512.95:476:38
2612.95:466:38
2712.95:466:38
2812.95:466:39
2912.95:466:39
3012.95:466:39
3112.95:466:40

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.28 kWh/m².

For context, solar energy here swings from a low near 3.91 kWh/m² to a high of 6.15 kWh/m² in April across the year — May's 5.28 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for Phetchabun

In seasonPeak

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

Phetchabun'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 Phetchabun?

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

2.7
Sightseeing
11th-best month of the year
4.7
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Phetchabun.

What to pack for Phetchabun in May

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

In May, Phetchabun sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Phetchabun 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 Phetchabun peaks around August 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 13UV 13Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr11Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Phetchabun 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 Phetchabun is worst in March — around 49 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (June, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1648 µg/m³Jun 2319 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb42Poor
Mar49Poor
Apr40Poor
May26Moderate
Jun19Moderate
Jul19Moderate
Aug19Moderate
Sep20Moderate
Oct22Moderate
Nov21Moderate
Dec24Moderate
Location & terrain

Where is Phetchabun?

Phetchabun sits at 16.4°N, 101.2°E, 120 m above sea level, in Thailand. The nearest listed city is Chon Daen, 41 km away.

Topography around Phetchabun

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

Within 3 km, the terrain around Phetchabun has only modest variations in elevation — a maximum elevation change of 24 m around an average of 118 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,143 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,764 m.

The land around Phetchabun is covered by cropland (39%), trees (32%) and artificial surfaces (25%) within 3 km, trees (48%) and cropland (44%) within 16 km, and trees (61%) and cropland (34%) within 80 km.

3 km
24 m
16 km
1,143 m
80 km
1,764 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Chon Daen 41 km · Lom Sak 41 km · Nong Phai 49 km · Thap Khlo 67 km · Taphan Hin 82 km · Wichian Buri 85 km · Kaset Sombun 86 km · Phichit 87 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 Phetchabun (16.419°, 101.1606°, elevation 120 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).