Weather in Phnom Penh - 14-day forecast

Detailed weather forecast for Phnom Penh, Cambodia: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Phnom Penh

today🌧️ 33°💧 0.8 mm

Sun🌧️ 35°💧 0.3 mm

Mon🌧️ 34°💧 4.1 mm

Tue🌧️ 32°💧 0.8 mm

Wed☁️ 31°💧 3 mm

Thu🌧️ 25°💧 19 mm

Fri🌧️ 26°💧 22.3 mm

Sat🌧️ 25°💧 55 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Thursday 10 Sept in Phnom Penh, the forecast high is 25°C. Typical daytime temperatures at this time of year range from 29°C to 31°C, so it will be exceptionally cool. It is cooler than 99% of similar days.

Saturday 5 Sept

33°Cexceptionally warm

usually 29°C–31°C

warmer than 95% of similar days

night: exceptionally warm rain: less rain than usual wind: exceptionally strong

Sunday 6 Sept

35°Cexceptionally warm

usually 29°C–31°C

warmer than 97% of similar days

night: exceptionally warm rain: less rain than usual wind: exceptionally strong

Monday 7 Sept

34°Cexceptionally warm

usually 29°C–31°C

warmer than 96% of similar days

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Tuesday 8 Sept

32°Cexceptionally warm

usually 29°C–31°C

warmer than 94% of similar days

night: exceptionally warm rain: less rain than usual wind: exceptionally strong

Wednesday 9 Sept

31°Cwarmer than usual

usually 29°C–31°C

warmer than 77% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Thursday 10 Sept

25°Cexceptionally cool

usually 29°C–31°C

cooler than 99% of similar days

night: near normal rain: exceptionally wet wind: exceptionally strong

Friday 11 Sept

26°Cexceptionally cool

usually 29°C–31°C

cooler than 99% of similar days

night: warmer than usual rain: exceptionally wet wind: stronger than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 30°C by day. The coolest year was 1986 (29°C) and the warmest was 2016 (34°C). The current forecast averages 31°C - higher than in 76% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Phnom Penh

Phnom Penh - 14-day weather forecast infographic

Phnom Penh 30 & 45-day weather - long-range outlook

Next 16 days · forecast

29°

around 26° at night · days with rain: 13

Weeks 3-4 · avg for September

33°

around 25° at night · rain chance 75%

Weeks 5-7 · avg for October

32°

around 25° at night · rain chance 57%

The 30 & 45-day outlook for Phnom Penh: the next 16 days are a numerical forecast updated daily - on average 29° by day and 26° at night. Further out we rely on multi-year climate averages: around 33° in September, and about 32° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Phnom Penh

Saturday5 September 2026

🌧️33°light rain

sunrise 05:50 · sunset 18:08 · night 28° · evening 34° · rain 0.79 mm · humidity 50% · wind 8 m/s · clouds 100%

Sunday6 September 2026

🌧️35°light rain

sunrise 05:50 · sunset 18:08 · night 28° · evening 34° · rain 0.32 mm · humidity 40% · wind 8 m/s · clouds 82%

Monday7 September 2026

🌧️34°moderate rain

sunrise 05:50 · sunset 18:07 · night 27° · evening 30° · rain 4.11 mm · humidity 47% · wind 6 m/s · clouds 100%

Tuesday8 September 2026

🌧️32°light rain

sunrise 05:50 · sunset 18:06 · night 28° · evening 33° · rain 0.81 mm · humidity 52% · wind 8 m/s · clouds 67%

Wednesday9 September 2026

☁️31°overcast clouds

sunrise 05:50 · sunset 18:06 · night 27° · evening 28° · rain 3 mm · humidity 56% · wind 6 m/s · clouds 93%

Thursday10 September 2026

🌧️25°moderate rain

sunrise 05:50 · sunset 18:05 · night 24° · evening 26° · rain 19.04 mm · humidity 91% · wind 7 m/s · clouds 100%

Friday11 September 2026

🌧️26°moderate rain

sunrise 05:50 · sunset 18:04 · night 25° · evening 27° · rain 22.26 mm · humidity 86% · wind 5 m/s · clouds 100%

Saturday12 September 2026

🌧️25°heavy rain

sunrise 05:50 · sunset 18:04 · night 24° · evening 24° · rain 54.99 mm · humidity 87% · wind 8 m/s · clouds 100%

Sunday13 September 2026

🌧️27°moderate rain

sunrise 05:50 · sunset 18:03 · night 26° · evening 29° · rain 19.62 mm · humidity 77% · wind 6 m/s · clouds 99%

Monday14 September 2026

🌧️29°light rain

sunrise 05:50 · sunset 18:02 · night 25° · evening 26° · rain 8.25 mm · humidity 69% · wind 4 m/s · clouds 95%

Tuesday15 September 2026

🌧️26°moderate rain

sunrise 05:50 · sunset 18:02 · night 25° · evening 27° · rain 8.46 mm · humidity 84% · wind 7 m/s · clouds 100%

Wednesday16 September 2026

🌧️30°moderate rain

sunrise 05:50 · sunset 18:01 · night 27° · evening 31° · rain 8.4 mm · humidity 64% · wind 6 m/s · clouds 92%

Thursday17 September 2026

🌧️26°moderate rain

sunrise 05:50 · sunset 18:00 · night 26° · evening 29° · rain 7.17 mm · humidity 84% · wind 4 m/s · clouds 100%

Friday18 September 2026

🌧️26°moderate rain

sunrise 05:50 · sunset 18:00 · night 26° · evening 27° · rain 7.29 mm · humidity 86% · wind 7 m/s · clouds 100%

Saturday19 September 2026

🌧️28°moderate rain

sunrise 05:50 · sunset 17:59 · night 25° · evening 28° · rain 10.11 mm · humidity 75% · wind 7 m/s · clouds 92%

Sunday20 September 2026

🌧️28°light rain

sunrise 05:50 · sunset 17:58 · night 26° · evening 30° · rain 10.53 mm · humidity 76% · wind 8 m/s · clouds 99%

UV index in Phnom Penh - is it safe to sunbathe?

Today the UV index in Phnom Penh is 8 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

Phnom Penh weather through the year

Warmest, driest months on average: January, February, December.

Nearby and related places

Prey VêngKoh KongSiem ReapBattambangSihanoukvilleSisŏphŏn

FAQ - Phnom Penh weather

What is the weather like in Phnom Penh today?

Today it is about 33° during the day and 28° at night, light rain.

How far ahead can I check the forecast for Phnom Penh?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.