Hat Yai weather in May

In May, Hat Yai sees average daytime highs of 33°C and overnight lows near 25°C, with 150 mm of rain across 23.5 wet days and about 12.3 hours of daylight. It is the 2nd-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 6% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of May to 12 h 24 min by month's end. Set against the rest of the year, May is Hat Yai's 5th-clearest and 11th-windiest month. For the whole year in context, see Hat Yai's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
25°
12th coldest
Rainfall
150 mm
23.5 wet days
Daylight
12 h 18 min
6:05 AM – 6:24 PM
Cloud cover
81%
5th clearest
Wind
6 km/h
11th windiest
Solar energy
5.57 kWh/m²
Travel score
2.3
out of 10

Hat Yai is city in Songkhla province, Thailand.

Density
9,128/km²
people per km²
Founded
1935

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 Hat Yai 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 31°C and 35°C. Set against its neighbours, May runs on par with April and on par with June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13325
23325
33325
43325
53325
63325
73325
83325
93325
103325
113325
123325
133325
143325
153325
163325
173325
183325
193325
203325
213325
223325
233325
243325
253325
263325
273325
283325
293325
303325
313325

How May really feels in Hat Yai

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.

Hat Yai 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
Jan30° / 24°8812.311.64.5
Feb31° / 24°437.111.84.4
Mar33° / 24°9412.6123.4
Apr33° / 25°13619.312.12.6
May33° / 25°15023.512.32.3
Jun33° / 25°11419.412.42.7
Jul33° / 25°11519.812.42.8
Aug33° / 25°12120.812.22.7
Sep32° / 25°16424.1122.5
Oct31° / 24°28528.111.82.5
Nov30° / 24°34727.311.72.9
Dec29° / 24°27721.911.63.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% 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 83%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32377
42278
52278
62080
72080
82080
91981
101981
111882
121783
131783
141783
151783
161684
171684
181684
191684
201585
211585
221486
231486
241486
251486
261387
271387
281387
291387
301387
311387

Chance of precipitation in May

Any precipitation

Hat Yai gets around 150 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 77% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
174
275
376
476
576
676
777
877
977
1077
1177
1277
1377
1477
1577
1677
1777
1876
1976
2076
2176
2276
2375
2475
2575
2675
2775
2875
2975
3075
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 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1892
2793
3793
4694
5694
6694
7694
8694
9694
10694
11595
12595
13595
14694
15694
16694
17694
18694
19793
20793
21793
22892
23892
24991
25991
26991
271090
281090
291090
301189
311189

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 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
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 12 min at the start of May to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 6:08 AM to 6:04 AM, and sunset from 6:23 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:086:23
212.26:086:23
312.36:076:23
412.36:076:23
512.36:076:23
612.36:076:23
712.36:066:23
812.36:066:23
912.36:066:23
1012.36:066:23
1112.36:066:23
1212.36:056:23
1312.36:056:23
1412.36:056:24
1512.36:056:24
1612.36:056:24
1712.36:056:24
1812.36:056:24
1912.36:046:24
2012.36:046:25
2112.36:046:25
2212.36:046:25
2312.36:046:25
2412.46:046:25
2512.46:046:25
2612.46:046:26
2712.46:046:26
2812.46:046:26
2912.46:046:26
3012.46:046:26
3112.46:046:27

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.57 kWh/m².

For context, solar energy here swings from a low near 4.12 kWh/m² to a high of 6.21 kWh/m² in March across the year — May's 5.57 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Hazard calendar for Hat Yai

In seasonPeak

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

Hat Yai sits in the Pacific typhoon belt; the season peaks July–October.

Hat Yai's rainy season runs September–December, when most of the year's rain falls.

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

Is May a good time to visit Hat Yai?

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

2.3
Sightseeing
12th-best month of the year
4.2
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Hat Yai.

What to pack for Hat Yai in May

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

In May, Hat Yai 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

Sea temperature near Hat Yai in May

The nearest coast averages about 31°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 21 km away) is warmest in May at about 31°C and coldest in January near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun31Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Hat Yai in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hat Yai peaks around February 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 21UV 13Dec 12UV 11
UV index (midday)Level
Jan11Extreme
Feb14Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Hat Yai 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 Hat Yai is worst in October — around 27 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateOct 1227 µg/m³Feb 1217 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb17Moderate
Mar21Moderate
Apr27Moderate
May26Moderate
Jun27Moderate
Jul26Moderate
Aug24Moderate
Sep26Moderate
Oct27Moderate
Nov23Moderate
Dec18Moderate
Location & terrain

Where is Hat Yai?

Hat Yai sits at 7.0°N, 100.5°E, 12 m above sea level, in Thailand. The nearest listed city is Ban Mai, 23 km away.

Topography around Hat Yai

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

Within 3 km, the terrain around Hat Yai has only modest variations in elevation — a maximum elevation change of 65 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 418 m; within 80 km, large variations in elevation — a maximum elevation change of 1,146 m.

The land around Hat Yai is covered by artificial surfaces (67%) and trees (26%) within 3 km, trees (74%) within 16 km, and trees (61%) and water (29%) within 80 km.

3 km
65 m
16 km
418 m
80 km
1,146 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Ban Mai 23 km · Songkhla 25 km · Sadao 42 km · Satun 62 km · Changloon 64 km · Kampung Hutan Arau 68 km · Kangar 70 km · Padang Besar 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 Hat Yai (7.0084°, 100.4767°, elevation 12 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).