Ban Na weather in May

In May, Ban Na sees average daytime highs of 36°C and overnight lows near 27°C, with 209 mm of rain across 19.8 wet days and about 12.8 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 37°C in the first days to 35°C by the end. The sky is clear or mostly clear about 16% 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 Ban Na's 8th-clearest and 5th-windiest month. For the whole year in context, see Ban Na's year-round climate.

Daytime high
36°
3rd warmest
Overnight low
27°
12th coldest
Rainfall
209 mm
19.8 wet days
Daylight
12 h 48 min
5:53 AM – 6:41 PM
Cloud cover
74%
8th clearest
Wind
7 km/h
5th windiest
Solar energy
5.51 kWh/m²
Travel score
1.4
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 37°C in the first days to 35°C by the end.

A typical May day in Ban Na 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 32°C and 40°C. Set against its neighbours, May runs about 2°C cooler than April and about 2°C warmer than June.

25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
13827
23827
33727
43727
53727
63727
73727
83727
93727
103727
113727
123627
133627
143627
153627
163627
173627
183627
193627
203627
213627
223527
233527
243527
253527
263527
273527
283527
293527
303527
313527

How May really feels in Ban Na

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.

Ban Na weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 19°162.511.15.0
Feb35° / 21°131.511.43.4
Mar37° / 24°334.511.91.7
Apr38° / 27°699.312.40.9
May36° / 27°20919.812.81.4
Jun34° / 27°20422.3131.9
Jul33° / 26°20722.212.92.3
Aug33° / 26°24624.312.62.3
Sep33° / 26°25223.712.12.2
Oct33° / 25°1581711.63.0
Nov32° / 23°304.611.24.5
Dec31° / 20°142.2115.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35248
45149
54951
64753
74555
84357
94060
103961
113664
123466
133169
143070
152872
162575
172476
182278
192179
201981
211882
221783
231684
241684
251486
261486
271486
281288
291288
301288
311090

Chance of precipitation in May

Any precipitation

Ban Na gets around 209 mm of rain over 19.8 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 64% 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 (%)
150
251
352
453
554
655
756
857
959
1060
1162
1263
1365
1466
1567
1668
1768
1869
1969
2070
2170
2270
2370
2470
2570
2670
2771
2871
2972
3073
3174

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
1135235
2125137
3124940
4114742
5104644
6104446
794348
884249
984151
1074053
1163955
1263856
1353857
1443759
1543660
1633562
1733562
1823464
1923365
2013267
2113168
2213069
2312970
2412871
2512772
2612673
2712574
2812475
2912376
3012277
3112079

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:50 AM, and sunset from 6:36 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:006:36
212.66:006:37
312.65:596:37
412.65:596:37
512.75:586:38
612.75:586:38
712.75:576:38
812.75:576:39
912.75:566:39
1012.75:566:39
1112.75:556:39
1212.75:556:40
1312.85:556:40
1412.85:546:40
1512.85:546:41
1612.85:536:41
1712.85:536:41
1812.85:536:42
1912.85:536:42
2012.85:526:43
2112.85:526:43
2212.95:526:43
2312.95:526:44
2412.95:516:44
2512.95:516:44
2612.95:516:45
2712.95:516:45
2812.95:516:45
2912.95:516:46
3012.95:516:46
3112.95:506:46

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.51 kWh/m².

For context, solar energy here swings from a low near 4.07 kWh/m² to a high of 6.39 kWh/m² in April across the year — May's 5.51 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.0Intense
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.8Bright
85.8Bright
95.7Bright
105.7Bright
115.6Bright
125.6Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Ban Na

In seasonPeak

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

Ban Na's monsoon runs May–October, 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 Ban Na?

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

1.4
Sightseeing
11th-best month of the year
3.5
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Ban Na.

What to pack for Ban Na in May

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

In May, Ban Na sees daytime highs around 36°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Ban Na 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 Ban Na peaks around August 13 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 13UV 13Dec 14UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar10Very high
Apr11Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7Very high

Air quality in Ban Na 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 Ban Na is worst in March — around 58 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (June, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModeratePoorMar 1556 µg/m³Jun 2221 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb50Poor
Mar58Unhealthy
Apr47Poor
May29Moderate
Jun21Moderate
Jul22Moderate
Aug23Moderate
Sep26Moderate
Oct31Moderate
Nov33Moderate
Dec37Poor
Location & terrain

Where is Ban Na?

Ban Na sits at 17.0°N, 99.7°E, 59 m above sea level, in Thailand. The nearest listed city is Sukhothai, 10 km away.

Topography around Ban Na

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

Within 3 km, the terrain around Ban Na has only modest variations in elevation — a maximum elevation change of 21 m around an average of 54 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 771 m; within 80 km, large variations in elevation — a maximum elevation change of 1,187 m.

The land around Ban Na is covered by cropland (70%) within 3 km, cropland (63%) and trees (28%) within 16 km, and cropland (58%) and trees (38%) within 80 km.

3 km
21 m
16 km
771 m
80 km
1,187 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Sukhothai 10 km · Sawankhalok 35 km · Bang Rakam 50 km · Si Satchanalai 56 km · Phitsanulok 60 km · Ban Aranyik 62 km · Kamphaeng Phet 63 km · Tak 66 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 Ban Na (17.0172°, 99.7328°, elevation 59 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).