Cambodia weather in July

Cambodia weather in July – green season landscapes

July sits well into the green/monsoon season. Expect warm, humid days with short, heavy showers (often late afternoon or at night) and long sunny gaps in between. Temperatures ease slightly versus April–May, averaging around the upper-20s to low-30s °C, while countryside landscapes turn vividly green — great for photography if you don’t mind timing around showers.

July Quick Facts — Cambodia
• Siem Reap: ~25–32 °C; frequent short showers; bright mornings are common.
• Phnom Penh: ~26–32 °C; humid; late-day storms possible.
• South coast & islands (Sihanoukville/Koh Rong): sea ~28–29 °C; wetter and occasionally choppy but with sunny windows.
Based on multi-year climate normals for July.

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1. July Weather Overview (What to Expect)

Mornings often start dry; convection clouds then build after lunch. Showers are usually intense but brief (30–60 mins), clearing to dramatic skies. Humidity is high, yet rain breaks can make afternoons feel fresher. Coastal provinces see the most rainfall; inland areas are more mixed with many usable hours each day.

Rainfall: moderate–high overall; heaviest along the south coast and Cardamom Mountains.
Temperatures: plains commonly 30–32 °C by afternoon; nights ~25–26 °C. Highlands are a touch cooler.
Humidity: around 75–85%; showers often bring short-term relief.
Beach & Sea: sea stays warm ~28–29 °C; occasional swell/choppy days.
Comfort level: best 06:00–10:30 and after ~16:00; plan shade/indoor time around noon–15:00.

July Climate Snapshot by Region

Region / Base	Average High (°C)	Average Low (°C)	Rainfall (mm)	Rain Days	Humidity (%)	Sea Temp (°C)
Siem Reap (Angkor)	32	25–26	~160–210	14–18	75–80	—
Phnom Penh (Capital)	32	26	~160–220	14–18	75–80	—
Sihanoukville / Kep / Kampot	30–31	26	~400–500	18–22	80–85	28–29
Mondulkiri / Ratanakiri (Highlands)	28–30	21–23	~250–350	16–20	75–80	—

2. Where to Go in July (Best-Fit by Traveller Type)

July rewards flexible travellers with lush scenery, lower prices and fewer crowds. Use this quick selector to match your style to the right region:

Traveller Profile	Go Here	Why in July	Top Experiences
First-timers & culture lovers	Siem Reap (Angkor)	Greener temple backdrops, softer light after showers	Angkor sunrise, Ta Prohm shade, Bayon bas-reliefs
City & food	Phnom Penh	Great value stays; museums/cafés for rainy spells	Royal Palace, National Museum, coffee & markets
Beach (weather-permitting)	Kep, Kampot & islands off Sihanoukville	Warm seas; mix of sunny windows and wet days	Kep crab market, Kampot pepper farms, Koh Rong/Koh Rong Samloem*
Lush scenery & soft adventure	Mondulkiri & Ratanakiri	Waterfalls swell; mornings cooler; roads can be slow	Observe-and-walk elephant programs, hill-tribe villages

*Boat schedules may adjust during rougher seas — check locally the day before.

Siem Reap & Angkor

Start at sunrise for reflections at Angkor Wat. Keep a light rain layer for pop-up showers; temple corridors provide quick shelter. Post-shower light can be superb for photos.

Phnom Penh

Slot museums and cafés into the wettest hours. Riverside walks on Sisowath Quay feel best after 16:00 when heat and showers usually ease.

Kep, Kampot & the Islands

Expect a mix of sunny periods and longer wet spells. Seas stay warm (~28–29 °C) but can be choppy; plan boat trips with flexibility and check forecasts.

Mondulkiri & Ratanakiri

Trails get muddy after storms; rural roads may slow. Mornings are cooler; waterfalls are fuller and forests vibrant. Choose ethical, no-riding elephant experiences.

3. Events & Festive Notes in July

Asalha Puja & Start of Buddhist Lent (Khao Phansa) — dates vary by lunar calendar in July. Expect candlelit observances at pagodas; most attractions remain open.
Green-season value — hotel promotions and quieter sites are common; plan small time buffers around late-day storms.

4. Practical Tips for July Travellers

Rain strategy: outdoors 06:00–10:30 & 16:00–18:30; carry a compact umbrella or light rain jacket.
Packing list: breathable quick-dry clothing, insect repellent, waterproof phone pouch, quick-dry shoes/sandals, small towel.
Transport: allow extra time for rural roads post-storm; double-check boat/flight timings in unsettled weather.
Temple etiquette: shoulders/knees covered; a light scarf doubles as rain cover.
Hydration: refillable bottle; electrolytes help on humid days.

5. Frequently Asked Questions (July, Cambodia)

Is July a good month to visit Cambodia?

Yes — if you’re flexible with showers. You’ll get lush scenery, fewer crowds and good hotel value, with many dry, usable hours each day.

Does it rain all day in July?

Rarely. Showers tend to be short and intense, often late afternoon or overnight, with bright spells before and after.

How hot is Siem Reap in July?

Around 25–32 °C across the day. Humidity is high, but rain breaks often freshen the air.

What is the sea temperature in July?

About 28–29 °C along the south coast and around the islands — warm for swimming; seas can be choppy on windy days.

Where should I go in July?

For culture, Siem Reap (Angkor) with early starts. For beaches, Kep, Kampot and the islands off Sihanoukville on drier windows. For greenery and waterfalls, head to Mondulkiri or Ratanakiri (allow extra travel time).