Siargao (Cloud 9) weather in August

August in Siargao: sweltering, rainy, with clean air — fine if you can take 35°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Siargao🇵🇭 Philippines · Philippines · Island82
  1. 59Jan
  2. 68Feb
  3. 75Mar
  4. 82Apr
  5. 80May
  6. 83Jun
  7. 78Jul
  8. 82Aug
  9. 85Sep
  10. 73Oct
  11. 63Nov
  12. 58Dec

#4 of 12 months in Siargao · #610 of 1413 destinations to visit in August · comfort 82/100 (tier A)

Days
29°C
Nights
27°C
Wet days
17
Sun
9.8 h
Humidity
79%
Daylight
12 h
Siargao, Philippines
Photo: John Matthew · Pexels

Traveller notes on Siargao in August

Other months in Siargao

Forum posters describe March as the start of Siargao's summer peak season and a genuine improvement on the wetter December-February stretch, with clearer, more reliably sunny conditions becoming more common from March into June - though posters are direct that being in the tropics means rain or even a passing storm remains a real possibility, with one visitor specifically recalling a typhoon passing through during a March stay. The destination's own climate data shows March still averaging well over 20 rainy days, easing only modestly from the January-February peak and continuing to improve into the true driest stretch around April-September. Posters also flag March as the end of the school year, meaning more crowds at Siargao's popular beaches and surf spots than the quieter months surrounding it. Posters generally rate March as improving but still genuinely rain-prone for Siargao, with the driest conditions still a couple of months off.
Tripadvisor community · March · 1 month ago · Read more on Tripadvisor ↗
September and October are Siargao's peak surf months — the waves are good, competitions run in September, and Cloud 9 works on Pacific swell. The forum's typhoon answer is geographic: Siargao sits in the southern Philippines, near the equator and outside the main typhoon belt, so when the Visayas are being hit Mindanao is often bright and sunny — though the island is close enough to Leyte that a storm passing nearby still matters. On rain, regulars note September is drier here than January, while the record still shows about seventeen wet days. Days near 29°C, nights 27, sea at 30.
Tripadvisor community · September · 1 month ago · Read more on Tripadvisor ↗

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

Siargao climate normals — August

Daytime high29°C / 84°F🔥 sweltering
Nighttime low27°C / 80°F
Feels like (high)35°C / 95°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall129 mm / 5.1 in🌧 rainy
Rainy days17 days
Humidity79%💦 very humid
Dew point24°C / 75°F
Sunshine9.8 h/day
Daylight12.4 h
Wind19 km/h / 12 mph
Air quality (US AQI)27🍃 good

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

Crowds in Siargao in August

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.

BusyCloud 9 surf season, school holidays in 4 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Siargao'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).

Fair weatherSiargao's best weather comes in April, June and September — separate windows, not one continuous season.

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Best weatherFair weatherToughest weather

What's on in Siargao in August

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

  • Season

    Cloud 9 surf season

    1 Aug – 30 Nov · usuallyCrowded

    The swell the island is named for on the surfing maps, breaking over shallow reef in front of the boardwalk. It is a proper wave, not a learners' one, and the line-up shows it. Source ↗

What's on around the world in August →

Nearby, and something's on

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

Where is Siargao?

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Siargao in August — FAQ

Is August a good time to visit Siargao?
August in Siargao: sweltering, rainy, with clean air — fine if you can take 35°C afternoons. It ranks #4 of 12 months for Siargao on SeasonMap's comfort score (82/100).
What is the weather like in Siargao in August?
In August, Siargao averages a daily high of 28.9°C and a low of 26.5°C, with about 128.7 mm of rain over roughly 17.3 rainy days.
What is the air quality in Siargao in August?
Siargao has a mean US Air Quality Index of about 27 in August.

Within 300 km: Bohol's Habagat rains around 1 Jun – 31 Oct, and Cebu City's Habagat rains around 1 Jun – 15 Nov.