Cha-am weather in July

In July, Cha-am sees average daytime highs of 31°C and overnight lows near 27°C, with 81 mm of rain across 16.2 wet days and about 12.7 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of July to 12 h 36 min by month's end. Set against the rest of the year, July is Cha-am's 11th-clearest and 7th-windiest month. For the whole year in context, see Cha-am's year-round climate.

Daytime high
31°
4th warmest
Overnight low
27°
9th coldest
Rainfall
81 mm
16.2 wet days
Daylight
12 h 42 min
6:05 AM – 6:46 PM
Cloud cover
89%
11th clearest
Wind
11 km/h
7th windiest
Solar energy
4.76 kWh/m²
Travel score
3.5
out of 10

Cha-am is town in Phetchaburi province, Thailand.

Density
75/km²
people per km²

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 31°C through the month.

A typical July day in Cha-am reaches about 31°C in the afternoon and slips back to 27°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, July runs on par with June and on par with August.

25°28°30°33°35°151015202531
Avg high (°C)Avg low (°C)
13227
23227
33227
43127
53127
63127
73127
83127
93127
103127
113127
123127
133127
143127
153127
163127
173127
183127
193127
203127
213127
223127
233127
243127
253127
263127
273127
283127
293127
303127
313127

How July really feels in Cha-am

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.

Cha-am weather by month

How July compares with the rest of the year at a glance. July is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°172.611.36.9
Feb30° / 25°10211.66.4
Mar31° / 26°485.411.95.2
Apr32° / 27°538.812.34.1
May32° / 28°9117.512.63.1
Jun32° / 27°6214.312.73.4
Jul31° / 27°8116.212.73.5
Aug31° / 27°8618.312.43.4
Sep30° / 26°1402012.13.4
Oct29° / 26°25323.111.73.7
Nov29° / 26°768.611.45.5
Dec29° / 24°172.611.36.8

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 6% of July, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
7991
8991
91090
101090
111090
121090
131090
141090
151090
16892
17892
18892
19892
20892
21793
22793
23793
24694
25694
26595
27595
28595
29496
30496
31496

Chance of precipitation in July

Any precipitation

Cha-am gets around 81 mm of rain over 16.2 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 52% and peaks near 56% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
149
249
350
450
550
650
751
851
951
1052
1152
1252
1352
1452
1552
1652
1752
1852
1953
2053
2153
2253
2353
2454
2554
2655
2755
2855
2956
3056
3156

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18416
28416
38515
48515
58614
68614
78614
88614
98515
108515
118515
128515
138515
148515
158515
168515
178515
188515
198515
208515
218515
228614
238614
248713
258713
268713
278812
288812
298812
308911
318911

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
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 42 min at the start of July to 12 h 36 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 6:01 AM to 6:09 AM, and sunset from 6:46 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:016:46
212.76:016:46
312.76:026:46
412.76:026:46
512.76:026:46
612.76:026:46
712.76:036:46
812.76:036:46
912.76:036:46
1012.76:046:46
1112.76:046:46
1212.76:046:46
1312.76:046:46
1412.76:056:46
1512.76:056:46
1612.76:056:46
1712.76:056:46
1812.76:066:46
1912.76:066:46
2012.76:066:46
2112.76:066:46
2212.66:076:46
2312.66:076:46
2412.66:076:45
2512.66:076:45
2612.66:086:45
2712.66:086:45
2812.66:086:44
2912.66:086:44
3012.66:096:44
3112.66:096:44

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.76 kWh/m².

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 6.33 kWh/m² in April across the year — July's 4.76 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
314.5Bright
Planning a trip in July

Hazard calendar for Cha-am

In seasonPeak

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

Cha-am sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Cha-am's rainy season runs September–October, 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 Cha-am?

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

3.5
Sightseeing
8th-best month of the year
5.3
Beach & pool
8th-best month of the year

July is a weaker month for outdoor sightseeing in Cha-am.

What to pack for Cha-am in July

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

In July, Cha-am sees daytime highs around 31°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Cha-am 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 19 km away) is warmest in May at about 31°C and coldest in January near 27°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
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Cha-am in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Cha-am peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 14Jan 1UV 9
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Cha-am 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 Cha-am is worst in February — around 34 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 2234 µg/m³Aug 2014 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb34Moderate
Mar34Moderate
Apr31Moderate
May19Moderate
Jun14Moderate
Jul15Moderate
Aug14Moderate
Sep14Moderate
Oct22Moderate
Nov27Moderate
Dec29Moderate
Location & terrain

Where is Cha-am?

Cha-am sits at 12.8°N, 100.0°E, 5 m above sea level, in Thailand. The nearest listed city is Tha Yang, 19 km away.

Topography around Cha-am

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

Within 3 km, the terrain around Cha-am has only modest variations in elevation — a maximum elevation change of 214 m around an average of 7 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 643 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,314 m.

The land around Cha-am is covered by artificial surfaces (22%), trees (21%) and grassland (20%) within 3 km, water (41%) and trees (27%) within 16 km, and trees (46%) and water (40%) within 80 km.

3 km
214 m
16 km
643 m
80 km
1,314 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Tha Yang 19 km · Hua Hin 26 km · Phetchaburi 35 km · Pran Buri 47 km · Khao Yoi 51 km · Sam Roi Yot 60 km · Samut Songkhram 68 km · Damnoen Saduak 80 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 Cha-am (12.8°, 99.9667°, elevation 5 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).