Cambodia flagClimate & Weather Guide

Climate zones, seasonal temperatures, rainfall patterns, and best travel times in Cambodia

Cambodia features a predominantly tropical climate characterized by high temperatures year-round, high humidity, and distinct wet and dry seasons, making it appealing for expats seeking warm weather but challenging due to heat and monsoon rains. The country spans about 181,000 km² with limited climate diversity, primarily falling under Tropical savanna (Aw) and Tropical monsoon (Am) classifications per Köppen-Geiger, with coastal southwest areas wetter. Average annual temperatures hover around 27-28°C, with minimal seasonal variation: 'summer' (March-May) peaks at 30-35°C and 'winter' (November-February) cools slightly to 25-30°C. Rainfall varies from 1200-2000mm annually, concentrated May-October, while sunshine exceeds 2500 hours yearly. Humidity remains consistently high at 75-85%, ideal for lush landscapes but requiring adaptation for comfortable living.

Summer Average

28-35°C

Winter Average

24-30°C

Climate Types

Tropical savanna and Tropical monsoon

Annual Rainfall

1200-2000 mm

Sunshine Hours

2,500-2,800 hours annually

Average Humidity

75-85%

Regional Climate Variations

Central Plains

Encompassing Phnom Penh, Siem Reap, and the Tonle Sap basin, this vast lowland area dominates Cambodia's landscape under Tropical savanna (Aw) climate. Expect consistently hot conditions with dry season (November-April) highs of 32-36°C and minimal rain, transitioning to wet season (May-October) deluges totaling 1400-1600mm. Nights rarely drop below 24°C, with high humidity amplifying the heat. Ideal for urban expats but demands air conditioning; flooding risks rise near rivers during monsoons. Lush rice paddies thrive here post-rains.

Summer:29-35°C
Winter:24-31°C
High rainfall

Oppressively hot and humid year-round with stark wet-dry contrast; refreshing breezes rare, but vibrant greenery post-monsoon enchants residents.

Southwest Coast

Including Sihanoukville, Koh Kong, and Kampot, this coastal strip experiences Tropical monsoon (Am) climate with steadier, higher rainfall of 1800-2500mm annually due to southwest monsoon influence. Temperatures mirror inland at 27-34°C, but sea breezes offer slight relief. Wet season starts earlier (April-November), with frequent showers; dry season remains balmy. Pristine beaches attract expats, though typhoon risks and erosion pose concerns amid climate shifts.

Summer:28-34°C
Winter:25-32°C
Very high rainfall

Maritime warmth with persistent moisture; coastal winds temper heat, fostering relaxed beach lifestyle despite heavy, reliable rains.

Northeast Highlands

Covering Ratanakiri and Mondulkiri provinces, these elevated areas feature Tropical savanna (Aw) with slightly moderated temperatures (25-33°C) due to altitude up to 1000m. Annual rainfall 1500-2200mm supports dense forests and waterfalls, with wet season fog and cooler nights around 20-24°C. Dry season brings hazy skies from regional burning. Appeals to nature-loving expats but infrastructure limits access; malaria precautions essential.

Summer:26-33°C
Winter:22-30°C
Very high rainfall

Milder highland respite from lowland swelter; misty rains nourish wild jungles, offering cooler escapes with rugged adventure vibe.

Cambodia's tropical climate offers eternal warmth with negligible cool periods, dominated by Tropical savanna and monsoon types across central plains, southwest coast, and northeast highlands. Expats enjoy abundant sunshine and beach vibes but must navigate intense heat, humidity, and seasonal flooding. Resilient infrastructure and affordable living make it viable for tropical lifestyle seekers.