Phnom Penh weather in July

In July, Phnom Penh sees average daytime highs of 33°C and overnight lows near 26°C, with 154 mm of rain across 25.6 wet days and about 12.6 hours of daylight. It is the 6th-warmest and 4th-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 2% of the time in July, and the air most often feels miserable.

Daylight stretches from about 12 h 42 min at the start of July to 12 h 30 min by month's end. Set against the rest of the year, July is Phnom Penh's 10th-clearest and 3rd-windiest month. For the whole year in context, see Phnom Penh's year-round climate.

Daytime high
33°
6th warmest
Overnight low
26°
9th coldest
Rainfall
154 mm
25.6 wet days
Daylight
12 h 36 min
5:47 AM – 6:24 PM
Cloud cover
87%
10th clearest
Wind
10 km/h
3rd windiest
Solar energy
5.02 kWh/m²
Travel score
2.2
out of 10

Phnom Penh is capital of Cambodia.

Density
2,319/km²
people per km²
Founded
1372

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 33°C through the month.

A typical July day in Phnom Penh reaches about 33°C in the afternoon and slips back to 26°C overnight — a 7°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, July runs on par with June and on par with August.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103326
113326
123326
133326
143326
153326
163326
173326
183326
193326
203326
213326
223326
233326
243326
253326
263326
273326
283326
293326
303326
313326

How July really feels in Phnom Penh

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
31 feel dangerously hot (≥ 39°C)
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.

Phnom Penh weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°15311.44.5
Feb34° / 24°81.711.63.8
Mar35° / 26°366.211.92.7
Apr36° / 27°8114.612.21.9
May35° / 27°15422.712.51.8
Jun34° / 26°15424.312.72.0
Jul33° / 26°15425.612.62.2
Aug33° / 26°17825.912.42.1
Sep32° / 26°24527.212.12.1
Oct32° / 25°24424.711.72.6
Nov32° / 25°7811.111.53.9
Dec31° / 24°275.111.34.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 9% of July, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
41090
51090
61090
71189
81189
91288
101288
111288
121387
131387
141387
151387
161387
171387
181387
191288
201189
211189
221189
231090
241090
25991
26991
27892
28793
29694
30694
31694

Chance of precipitation in July

Any precipitation

Phnom Penh gets around 154 mm of rain over 25.6 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 82% and peaks near 85% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
183
284
384
484
585
685
785
885
985
1085
1184
1284
1384
1483
1583
1682
1782
1881
1981
2080
2180
2280
2380
2480
2580
2680
2781
2881
2981
3081
3181

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 67% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12674
22674
32674
42674
52773
62773
72872
82872
92872
102971
112971
123070
133070
143169
153169
163268
173367
183367
193466
203565
213664
223664
233763
243862
253961
264060
274060
284159
294258
304258
314357

Wind in July

Winds average 10 km/h in July.

Across July, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 42 min at the start of July to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over July. Sunrise moves from 5:44 AM to 5:51 AM, and sunset from 6:24 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:446:24
212.75:446:24
312.75:446:24
412.75:446:24
512.75:456:24
612.75:456:24
712.75:456:24
812.75:456:24
912.65:466:25
1012.65:466:25
1112.65:466:25
1212.65:466:25
1312.65:476:25
1412.65:476:25
1512.65:476:25
1612.65:476:24
1712.65:486:24
1812.65:486:24
1912.65:486:24
2012.65:486:24
2112.65:496:24
2212.65:496:24
2312.65:496:24
2412.65:496:24
2512.65:506:23
2612.65:506:23
2712.65:506:23
2812.55:506:23
2912.55:506:23
3012.55:516:22
3112.55:516:22

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.02 kWh/m².

For context, solar energy here swings from a low near 4.59 kWh/m² to a high of 6.14 kWh/m² in April across the year — July's 5.02 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
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
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in July

Hazard calendar for Phnom Penh

In seasonPeak

In July, Phnom Penh sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Phnom Penh sits in the Pacific typhoon belt; the season peaks July–October.

Phnom Penh's rainy season runs May–October, 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 July a good time to visit Phnom Penh?

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

2.2
Sightseeing
7th-best month of the year
3.8
Beach & pool
8th-best month of the year

July is a weaker month for outdoor sightseeing in Phnom Penh.

What to pack for Phnom Penh in July

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

In July, Phnom Penh sees daytime highs around 33°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

UV index in Phnom Penh 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 Phnom Penh peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 19 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 18UV 14Nov 19UV 9
UV index (midday)Level
Jan10Extreme
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct10Very high
Nov9Very high
Dec9Very high

Air quality in Phnom Penh 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 Phnom Penh is worst in February — around 44 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (August, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateFeb 1344 µg/m³Aug 1419 µg/m³
PM2.5 (µg/m³)Level
Jan42Poor
Feb44Poor
Mar41Poor
Apr35Poor
May26Moderate
Jun21Moderate
Jul21Moderate
Aug18Moderate
Sep22Moderate
Oct28Moderate
Nov29Moderate
Dec29Moderate
Location & terrain

Where is Phnom Penh?

Phnom Penh sits at 11.6°N, 104.9°E, 20 m above sea level, in Cambodia. The nearest listed city is Boeng Kak Pir, 3.0 km away.

Phumĭ Yoŭl ToŭngPhumĭ Véal TônsayKampong Speu

Topography around Phnom Penh

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

Within 3 km, the terrain around Phnom Penh has only modest variations in elevation — a maximum elevation change of 25 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, large variations in elevation — a maximum elevation change of 713 m.

The land around Phnom Penh is covered by artificial surfaces (82%) within 3 km, artificial surfaces (25%) within 16 km, and cropland (70%) within 80 km.

3 km
25 m
16 km
59 m
80 km
713 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
July weather nearby: Boeng Kak Pir 3.0 km · Dangkao 7.0 km · Chrang Chamreh Muoy 8.0 km · Ta Khmau 10 km · Kandoeng 31 km · Phumĭ Yoŭl Toŭng 37 km · Phumĭ Véal Tônsay 39 km · Kampong Speu 45 km

Cambodia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / C / G
230 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$2,872
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
1.8
per 100k, 2011
Road deaths
19.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 390
Religion
Buddhist 97%Muslim 2%other 1%Christian 0%

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 Phnom Penh (11.5625°, 104.916°, elevation 20 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). 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).