Cambodia weather in June

Cambodia weather in June – green season showers

June ushers in Cambodia’s green season proper. Expect warm, humid days (~28 °C on average) with short, heavy showers — often in the late afternoon or at night — that quickly clear the air. There’s still plenty of sunshine between downpours, visitor numbers drop, and hotel deals appear, especially around the major temple sites.

June Quick Facts — Cambodia
• Siem Reap: ~26–33 °C; frequent short showers; brighter mornings.
• Phnom Penh: ~27–33 °C; humid, with late-day storms possible.
• South coast & islands (Sihanoukville/Koh Rong): sea ~29–30 °C; wetter than inland, but with sunny breaks.
Based on multi-year climate normals for June.

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1. June Weather Overview (What to Expect)

June sits at the start of the wet season. Mornings are often dry and bright; convection clouds build after lunch, bringing brief downpours and the odd thunderstorm. Showers help reduce the sticky heat, and landscapes turn lush quickly.

Rainfall: low–moderate inland, higher on the south coast; showers are usually short but intense.
Temperatures: plains commonly 31–33 °C by afternoon; nights ~26–27 °C. Highlands are a touch cooler.
Humidity: ~70–80% by day; a shower often brings noticeable relief.
Beach & Sea: sea stays warm ~29–30 °C; occasional choppy days and passing showers.
Comfort level: best 06:00–10:00 and after ~16:00; plan shade/indoor time around noon–15:00.

June Climate Snapshot by Region

Region / Base	Average High (°C)	Average Low (°C)	Rainfall (mm)	Rain Days	Humidity (%)	Sea Temp (°C)
Siem Reap (Angkor)	33	26	~140–180	12–16	75–80	—
Phnom Penh (Capital)	33	27	~140–180	12–16	75–80	—
Sihanoukville / Kep / Kampot	31–32	26–27	~300–400	15–20	80–85	29–30
Mondulkiri / Ratanakiri (Highlands)	30–31	22–24	~200–300	14–18	75–80	—

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

June rewards flexible travelers with greener scenery, quieter sites and value deals. Use this quick selector to match your style to the right region:

Traveller Profile	Go Here	Why in June	Top Experiences
First-timers & culture lovers	Siem Reap (Angkor)	Quieter temples; bright mornings between showers	Angkor sunrise, Ta Prohm shade, Bayon bas-reliefs
City & food	Phnom Penh	Great value stays; museums/cafés for the wettest hours	Royal Palace, National Museum, craft coffee & markets
Beach & snorkeling	Kep, Kampot & islands off Sihanoukville	Warm seas; sunny spells between passing showers	Kep crab market, Kampot pepper farms, Koh Rong/Koh Rong Samloem
Lush scenery & soft adventure	Mondulkiri & Ratanakiri	Greening landscapes; cooler dawns; watch road conditions	Observe-and-walk elephant programs, hill-tribe villages

Siem Reap & Angkor

Start pre-dawn for Angkor Wat; keep a light rain layer for pop-up showers. If rain hits mid-afternoon, it often clears for a beautiful golden hour with dramatic skies.

Phnom Penh

Build museums and cafés into midday plans. Riverside walks on Sisowath Quay feel best after 16:00 when the heat eases and showers pass.

Kep, Kampot & the Islands

The coast is wetter but still sees long sunny windows. Seas remain warm (~29–30 °C); some days are choppier — check boat schedules if storms are forecast.

Mondulkiri & Ratanakiri

Trails can get muddy after storms and rural roads may slow down. Mornings are cooler; greenery returns fast. Always choose ethical, no-riding elephant experiences.

3. Events & Festive Notes in June

Queen Mother Norodom Monineath’s Birthday — 18 June (public holiday). Expect celebratory decor and some office closures.
Green season travel: excellent value on hotels and guides; book boats/flights with small time buffers during stormy afternoons.

4. Practical Tips for June Travellers

Rain strategy: plan outdoors 06:00–10:30 & 16:00–18:30; keep a compact umbrella or light rain jacket.
Packing list: breathable quick-dry clothing, sun hat, reef-safe sunscreen, insect repellent, waterproof phone pouch, quick-dry shoes/sandals.
Transport: allow extra time in rural areas after heavy showers; check boat conditions on windy days.
Temple etiquette: shoulders/knees covered; bring a light cover-up that doubles as rain protection.
Hydration: carry a refillable bottle; electrolytes help on humid days.

5. Frequently Asked Questions (June, Cambodia)

Is June a good month to visit Cambodia?

Yes — if you’re flexible. You’ll enjoy quieter sites, greener scenery and good value. Plan around short showers and you’ll still get plenty of sunshine.

Does it rain all day in June?

Rarely. Showers are typically short (30–60 minutes) and often late-day or overnight, with dry, bright spells in between.

How hot is Siem Reap in June?

Around 26–33 °C across the day. Humidity is higher than in the dry season, but rains help take the edge off the heat.

What is the sea temperature in June?

About 29–30 °C along the south coast and around the islands — warm for swimming and snorkeling, though seas can be choppy at times.

Where should I go in June?

For culture, Siem Reap (Angkor) with early starts. For beaches, Kep, Kampot and the islands off Sihanoukville on drier days. For greenery and cooler dawns, head to Mondulkiri or Ratanakiri (watch road conditions).