Phnom Penh weather in December

Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average

Phnom Penh December weather at a glance

B Good 🙂

In December, Phnom Penh averages 27.1°C, with typical highs of 31.4°C and lows of 23.5°C. The historical average is 7 wet days and 68% humidity.

Compared with Seoul in December, it is 28°C warmer than Seoul, with 2 more wet days.

Phnom Penh December temperature & humidity

Average27.1°CHigh 31.4° / low 23.5°

Humidity68%

Wet days7 days21% of days

Day–night range7.9°

Phnom Penh December rain & wet days

Wet days7 daysHistorical monthly average

Share of wet days21%Not a forecast probability

Pack a compact umbrella. Keep an indoor stop available between outdoor activities.

What to wear in Phnom Penh in December

Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle.

DaytimeBreathable short sleeves, hat and sunscreen · average high 31.4°C
Morning & eveningLight layer for air-conditioned rooms · average low 23.5°C
FootwearComfortable walking shoes; quick-dry footwear for rainy days.

Useful extras

Quick-dry clothingPortable fanRefillable water bottle

Use the Bangkok checklist as a starting point →

Packing essentials

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Travel compression packing pouches
코멧 여행용 압축 파우치 4종 세트 Travel plug adapter
에너자이저 PD 45W 여행용 멀티 어댑터, 화이트 Portable fan
홈플래닛 컴팩트 BLDC 휴대용 선풍기 GXZ-F78 Inflatable travel neck pillow
마이워니 여행용 에어 목베개

Phnom Penh December sunrise & sunset times

2026 December · Local time (Asia/Phnom_Penh)

Sunrise on the 15th06:12

Sunset on the 15th17:39

Daylight duration11h 27m

Start, middle and end of the month
Date	Sunrise	Sunset	Daylight
2026-12-01	06:04	17:34	11h 30m
2026-12-15	06:12	17:39	11h 27m
2026-12-31	06:19	17:47	11h 28m

For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.

Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup

Phnom Penh travel updates

Watch live CCTV

No public camera link is available for this destination yet. Check the weather or map instead.

Phnom Penh rainy season & dry season

Is December wet or dry?

The 2024–2025 average for December is 7 wet days.

Fewer wet days in recent data

January 0 wet days February 3 wet days March 6 wet days

More wet days in recent data

September 29 wet days August 29 wet days October 27 wet days

2024–2025 wet-day averages, not long-term season boundaries. Wet days do not mean all-day rain.

Packing for rainy and dry periods

For rainy periods, bring a light rain jacket, a waterproof pouch and quick-dry clothes. In drier months, pack sunscreen and a hat, plus a compact umbrella for showers. For beach trips, check the boat operator’s weather and cancellation notices.

Phnom Penh travel essentials

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Best months to visit Phnom Penh

Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.

J F M A M J J A S O N D

ColdHot

December weather by year

December 202426.6°7 wet days, 71% humidity

December 202527.5°6 wet days, 65% humidity

Daily weather in 2025

Daily high and low temperatures; blue labels show precipitation

134°23°

234°25°

333°24°4.4mm

429°24°3.6mm

531°24°1.4mm

631°23°

731°22°

830°22°

931°22°

1031°23°1.2mm

1132°24°2.5mm

1232°24°

1333°24°

1433°25°

1533°25°

1633°24°

1733°24°

1832°24°

1933°24°

2033°24°

2132°23°

2233°24°

2333°24°

2434°24°

2534°25°9.6mm

2631°25°

2731°23°

2831°23°

2932°22°

3031°22°

3131°22°

Frequently asked questions

What is Phnom Penh weather like in December?

In December, Phnom Penh averages 27.1°C, with typical highs of 31.4°C and lows of 23.5°C. The historical average is 7 wet days and 68% humidity. Our weather-comfort rating for this month is good.

Does it rain a lot in Phnom Penh in December?

There are about 7 wet days in December. A compact umbrella is still useful.

What should I wear in Phnom Penh in December?

Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle.

What are the best months to visit Phnom Penh?

Recent weather data rates January, February, December among the more comfortable months.

Where can I check Phnom Penh weather in December in real time?

Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.

Is December rainy or dry season in Phnom Penh?

The 2024–2025 average for December is 7 wet days.

Which months have fewer rainy days in Phnom Penh?

In our 2024–2025 data, January, February, March have the fewest wet days. These are recent observations, not long-term climate normals. Compare temperatures and your planned activities as well.

What time are sunrise and sunset in Phnom Penh in December?

On 2026-12-15, calculated sunrise is 06:12 and sunset is 17:39 in local time (Asia/Phnom_Penh). Times vary by date and terrain.

Phnom Penh weather by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

More Southeast Asia destinations in December

Ho Chi Minh Hanoi Ha Long Bay Sapa Da Lat Hoi An Mui Ne Chiang Mai Chiang Rai Phuket Pattaya Krabi Koh Samui Kuala Lumpur Kota Kinabalu Penang Langkawi Bali All destinations →

Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations