Surat Thani weather in July

In July, Surat Thani sees average daytime highs of 32°C and overnight lows near 26°C, with 89 mm of rain across 18.5 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 4% of the time in July, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of July to 12 h 24 min by month's end. Set against the rest of the year, July is Surat Thani's 10th-clearest and 3rd-windiest month. For the whole year in context, see Surat Thani's year-round climate.

Daytime high
32°
5th warmest
Overnight low
26°
9th coldest
Rainfall
89 mm
18.5 wet days
Daylight
12 h 30 min
6:14 AM – 6:43 PM
Cloud cover
85%
10th clearest
Wind
11 km/h
3rd windiest
Solar energy
5.09 kWh/m²
Travel score
3.2
out of 10

Surat Thani is city in Surat Thani province, Thailand.

Air quality
Elevated
PM2.5 17 µg/m³ · 2019
Density
1,914/km²
people per km²
Founded
1930

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical July day in Surat Thani reaches about 32°C in the afternoon and slips back to 26°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13226
23226
33226
43226
53226
63226
73226
83226
93226
103226
113226
123226
133226
143226
153226
163226
173226
183226
193226
203226
213226
223226
233226
243226
253226
263226
273226
283226
293226
303226
313226

How July really feels in Surat Thani

Once humidity and wind are folded in, July 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 July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Surat Thani weather by month

How July compares with the rest of the year at a glance. July is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°699.511.55.3
Feb31° / 25°314.811.75.2
Mar32° / 25°929.211.94.1
Apr33° / 26°11414.412.23.2
May32° / 26°12422.112.42.6
Jun32° / 26°9518.712.53.0
Jul32° / 26°8918.512.53.2
Aug32° / 26°10819.812.33.1
Sep31° / 25°15523.712.12.9
Oct30° / 25°26827.311.83.0
Nov29° / 25°26723.511.63.5
Dec29° / 25°14915.711.54.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 7% of July, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11189
21189
31189
41189
51189
61189
71288
81288
91288
101387
111387
121387
131387
141387
151387
161387
171387
181387
191288
201288
211288
221189
231090
241090
251090
261090
27991
28991
29892
30892
31892

Chance of precipitation in July

Any precipitation

Surat Thani gets around 89 mm of rain over 18.5 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 60% and peaks near 62% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
158
258
359
459
559
660
760
861
961
1061
1162
1262
1362
1462
1562
1661
1761
1861
1960
2060
2159
2259
2358
2458
2558
2658
2758
2858
2958
3058
3158

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the miserable band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14357
24456
34456
44555
54555
64555
74555
84555
94555
104555
114555
124456
134456
144456
154555
164555
174555
184555
194555
204654
214753
224753
234852
245050
255149
265248
275446
285545
295644
305842
315941

Wind in July

Winds average 11 km/h in July.

Across July, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 30 min at the start of July to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 6:10 AM to 6:16 AM, and sunset from 6:42 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:106:42
212.56:106:42
312.56:116:42
412.56:116:42
512.56:116:42
612.56:116:42
712.56:126:43
812.56:126:43
912.56:126:43
1012.56:126:43
1112.56:136:43
1212.56:136:43
1312.56:136:43
1412.56:136:43
1512.56:136:43
1612.56:146:43
1712.56:146:43
1812.56:146:43
1912.56:146:43
2012.56:156:43
2112.56:156:43
2212.56:156:43
2312.56:156:42
2412.46:156:42
2512.46:166:42
2612.46:166:42
2712.46:166:42
2812.46:166:42
2912.46:166:42
3012.46:166:41
3112.46:166:41

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.09 kWh/m².

For context, solar energy here swings from a low near 4.14 kWh/m² to a high of 6.26 kWh/m² in March across the year — July's 5.09 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.1Bright
Planning a trip in July

Hazard calendar for Surat Thani

In seasonPeak

None of Surat Thani's seasonal hazards are active in July. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Surat Thani sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Surat Thani's rainy season runs May–May, when most of the year's rain falls.

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

Is July a good time to visit Surat Thani?

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

3.2
Sightseeing
6th-best month of the year
4.9
Beach & pool
6th-best month of the year

July is a weaker month for outdoor sightseeing in Surat Thani.

What to pack for Surat Thani in July

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

In July, Surat Thani sees daytime highs around 32°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Surat Thani in July

The nearest coast averages about 30°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 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
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Surat Thani in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Surat Thani peaks around August 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 21UV 13Dec 16UV 10
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug14Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Air quality in Surat Thani in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Surat Thani is worst in April — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Surat Thani's WHO annual average of 17 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1021 µg/m³Aug 2014 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb19Moderate
Mar21Moderate
Apr21Moderate
May17Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep15Moderate
Oct15Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is Surat Thani?

Surat Thani sits at 9.1°N, 99.3°E, 10 m above sea level, in Thailand. The nearest listed city is Tha Kham, 12 km away.

Lang SuanKo Pha-nganNakhon Si ThammaratThung SongKo Tao

Topography around Surat Thani

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

Within 3 km, the terrain around Surat Thani has only modest variations in elevation — a maximum elevation change of 35 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 308 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,599 m.

The land around Surat Thani is covered by artificial surfaces (45%) and trees (35%) within 3 km, trees (57%) and water (23%) within 16 km, and trees (68%) and water (29%) within 80 km.

3 km
35 m
16 km
308 m
80 km
1,599 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
July weather nearby: Tha Kham 12 km · Ban Na San 38 km · Ko Samui 79 km · Lang Suan 94 km · Ko Pha-ngan 103 km · Nakhon Si Thammarat 105 km · Thung Song 115 km · Ko Tao 119 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 Surat Thani (9.1401°, 99.3331°, elevation 10 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).