High humidity (95%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.

Nearby Regional Outlook

Phnom Penh Weather Radar

Live precipitation · Cloud cover · Wind

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Frequently Asked Questions

What is the hottest month in Phnom Penh?

The hottest month in Phnom Penh is typically April, with daytime highs averaging around 34.5°C (94°F), based on 10 years of historical weather data. Overnight lows during this period average near 26°C (79°F).

What is the coldest month in Phnom Penh?

The coldest month in Phnom Penh is typically January, with overnight lows averaging around 23°C (73°F) and daytime highs near 31.4°C (89°F), based on 10 years of historical weather data.

Does Phnom Penh have a rainy season?

Phnom Penh doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. October is the wettest month on average (about 315 mm), while January is the driest (about 18 mm).

What's the best time of year to visit Phnom Penh?

The best time to visit Phnom Penh is typically December to February, when daytime highs average a comfortable 31.6°C (89°F). Rainfall during this window averages around 25 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Atmospheric Details

Wind

4 km/h

E · Light Breeze · Max 8 km/h

Humidity

95 %

High · feels muggy

UV Index

Moderate

Visibility

5 km

Moderate

Pressure

1008 hPa

Stable

Dew Point

24°C

Very humid

Today vs Normal

30°C0° below normal

The long-term average high for today is 30°C.

24 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

Red = above normal, blue = at or below · last 12 days

Air Quality

Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Health & Activity Advice

✅ Good for Outdoors

UV index is 4 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Conditions are comfortable for outdoor activity at most points during the day today.

High humidity (95%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.