Sihanoukville weather in July

July in Sihanoukville: sweltering, soaked, with clean air — a gamble, with 30 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Sihanoukville🇰🇭 Cambodia · Southern Vietnam & Cambodia · Beach56
  1. 92Jan
  2. 90Feb
  3. 85Mar
  4. 78Apr
  5. 63May
  6. 61Jun
  7. 56Jul
  8. 60Aug
  9. 53Sep
  10. 57Oct
  11. 74Nov
  12. 87Dec

#11 of 12 months in Sihanoukville · #1136 of 1413 destinations to visit in July · comfort 56/100 (tier D)

Days
29°C
Nights
26°C
Wet days
30
Sun
7.8 h
Humidity
86%
Daylight
13 h
Sihanoukville, Cambodia
Photo: Him Sann TR · Pexels

Traveller notes on Sihanoukville in July

Notes from nearby Phu Quoc (65 km away)

Sihanoukville doesn't have its own notes for July yet — these are about Phu Quoc, close enough to share the season.

Phu Quoc's forum calls July rainy season but not the peak of it, with rain most days though rarely an all-day washout, and rougher seas particularly on the island's west side. Regulars note conditions vary a lot by luck and by which coast you're on, with the calmer southeast side a better bet, and several suggest waiting for October or November if reliable beach weather matters more than the trip dates.
Tripadvisor community · July · 1 month ago · about Phu Quoc · Read more on Tripadvisor ↗

Other months in Sihanoukville

Sihanoukville forum regulars describe August as genuine monsoon season, with rain that can hit overnight, early morning or mid-afternoon and, when it does, comes down hard for roughly an hour before clearing. One traveler who spent two weeks there in August said it only rained a handful of times, always torrential but brief, and had more sunny days than wet ones overall. The bigger risk isn't the rain itself but rougher seas - a few posters mentioned island boat trips to Koh Rong getting cancelled on choppy days, so it's worth building a spare day into any island-hopping plan.
KohRongIslandHopper · August · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe February as comfortably inside Cambodia's dry season, with beaches around Sihanoukville generally clean and calm this time of year. Posters are candid, though, that the country's tropical climate means even peak dry season isn't fully rain-free - localized afternoon or evening showers and brief thunderstorms remain possible, following a common daily pattern of a sunny morning giving way to clouding and rain later in the day. Posters treat this as a minor, short-lived interruption rather than a reason to avoid the period, with February still ranking among the better months for beach time on this coast.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Sihanoukville's card on the map.

Sihanoukville climate normals — July

Daytime high29°C / 83°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)34°C / 93°F
Sea temperature30°C / 85°F♨️ bath-warm
Rainfall534 mm / 21 in⛈ soaked
Rainy days30 days
Humidity86%💦 very humid
Dew point24°C / 76°F
Sunshine7.8 h/day
Daylight12.7 h
Wind14 km/h / 9 mph
Air quality (US AQI)35🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Sihanoukville in July

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 5 of the markets that fill it, one of its worst months for weather(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Sihanoukville's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherSihanoukville's weather peaks December–February, best around January.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Sihanoukville in July

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Season

    Rough island crossings

    1 Jun – 15 Oct · usuallyOff-season shutdownClosures

    Southwest wind puts a short chop on the run out to the islands and the ferries get cancelled on the bad days. Plenty of the island guesthouses simply close until November.

  • Season

    Wet season

    MonsoonRisk

    30 rainy days and about 534 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in July →

Nearby, and something's on

Within 300 km of Sihanoukville — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Sihanoukville?

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Sihanoukville in July — FAQ

Is July a good time to visit Sihanoukville?
July in Sihanoukville: sweltering, soaked, with clean air — a gamble, with 30 rainy days. It ranks #11 of 12 months for Sihanoukville on SeasonMap's comfort score (56/100).
What is the weather like in Sihanoukville in July?
In July, Sihanoukville averages a daily high of 28.5°C and a low of 25.7°C, with about 534.1 mm of rain over roughly 30 rainy days.
What is the air quality in Sihanoukville in July?
Sihanoukville has a mean US Air Quality Index of about 35 in July.

Within 300 km: Phu Quoc's Phu Quoc visa exemption on 1 Jan – 31 Dec.