Tomorrow's Weather Forecast - Phnom Penh

Tomorrow’s Outlook

Tomorrow brings a similar temperature to today. Expect heavy rain in the morning and afternoon and evening and night, with rain chances climbing as high as 98%. That risk lines up with humidity averaging 89% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 89%, so it will feel muggier and stickier than the temperature alone suggests. Winds stay light and calm, rarely topping 7 km/h. Sunrise is at 5:49 AM and sunset at 6:03 PM, for about 12h 13m of daylight.

Tomorrow: 29°/ 24°; Today30° / 25°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon27°

Rain probability: 84%
Wind speed: 6 km/h

AfternoonNoon – 6 PM29°

Rain probability: 98%
Wind speed: 6 km/h

Evening6 PM – Midn25°

Rain probability: 97%
Wind speed: 7 km/h

NightMidn – 6 AM25°

Rain probability: 85%
Wind speed: 6 km/h

24-Hour Rain & Temperature Forecast

Tomorrow12 Sep

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2:00

3:00

4:00

5:00

6:00

7:00

8:00

9:00

10:00

11:00

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Temperature · peaks at +29°C

+25

+24

+25

+27

+28

+29

+28

+29

+28

+26

+25

Wind & gusts · m/s

Rain probability · peaks at 98% at 15:00

85%

82%

81%

80%

78%

73%

68%

65%

67%

72%

78%

84%

89%

94%

96%

98%

97%

96%

94%

91%

86%

78%

Expected rainfall · 26.5mm total · peak at 18:00

0.1

0.2

0.4

0.3

2.7

1.2

0.5

0.3

7.4

5.8

4.3

2.2

0.5

0.2

Planning Advice for Tomorrow

Clothing: Waterproof jacket and umbrella strongly recommended.

Outdoor: Not ideal for outdoor plans or car washes — heavy rain expected.

Travel: Expect traffic slowdowns from wet roads. Allow extra time.

Sunrise & Sunset

Sunrise

5:49 AMDawn 5:19 AM

Total Daylight

12h 13m

Full day forecastSolar noon 11:56 AM

Sunset

6:03 PMDusk 6:33 PM

vs today-1 min daylight

Sunrise shiftSame time

Sunset shiftSame time

5-Day Weather Forecast

Weather Insight

Phnom Penh is forecast to reach a high of 29°C tomorrow, with an overnight low around 24°C. That's 1° below the long-term average high of 30°C for this time of year. Expect a high chance of rain (98% probability) and light winds averaging 7 km/h. Air quality is currently Moderate (AQI 94), driven mainly by PM2.5 at 39 μg/m³.

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.

Weather Insight

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.