Moroni weather in August

August in Moroni: hot, dry, with clean air — fine if you can take sticky heat.

Updated September 2026 · climate normals from ERA5 reanalysis

Moroni🇰🇲 Comoros · Indian Ocean Islands · Island93
  1. 63Jan
  2. 72Feb
  3. 75Mar
  4. 77Apr
  5. 85May
  6. 88Jun
  7. 90Jul
  8. 93Aug
  9. 94Sep
  10. 91Oct
  11. 87Nov
  12. 79Dec

#2 of 12 months in Moroni · #85 of 1413 destinations to visit in August · comfort 93/100 (tier S)

Days
29°C
Nights
22°C
Wet days
12
Sun
10.8 h
Humidity
80%
Daylight
12 h
Moroni, Comoros
Photo: Woodlouse · CC BY-SA 2.0

Traveller notes on Moroni in August

Other months in Moroni

Forum posters describing Grande Comore note December through February brings the lowest hotel prices, generally a sign of the region's wetter, cyclone-season low period in the Southern Indian Ocean, with March sitting at the tail end of that stretch as conditions gradually improve. Posters contrast this with early October, explicitly within the dry season, describing around 28C heat with humidity near 100% in the island's forested interior even during that drier window. Given the limited March-specific detail available for Moroni, this note leans on that broader seasonal shape: expect March to still carry meaningful rain and humidity as the wet season winds down, improving but not yet at the dry-season comfort of the following months. Posters generally recommend a private taxi (negotiable from around 20 EUR) for the Moroni airport transfer and note a 30 EUR cash visa-on-arrival, practical logistics as relevant to a Moroni visit as the exact weather.
Tripadvisor community · March · 1 month ago · Read more on Tripadvisor ↗
Detailed trip reports for Comoros are genuinely scarce on the forum - one visitor recently back from Grande Comore specifically noted how hard it was to find much information about traveling there before their trip. Posters who have visited generally describe the islands as a warm, humid, little-touristed volcanic destination in the Indian Ocean. Given the sparse destination-specific detail, this note is grounded in the well-established regional pattern shared with nearby Indian Ocean islands: a drier, cooler southern-hemisphere-winter stretch roughly May through October, and September sits within that comparatively drier window, ahead of the hotter, wetter cyclone-season months from November through April.
Tripadvisor community · September · 1 month ago · Read more on Tripadvisor ↗

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Moroni climate normals — August

Daytime high29°C / 85°F🥵 hot
Nighttime low22°C / 71°F
Feels like (high)33°C / 91°F
Sea temperature26°C / 79°F😎 warm sea
Rainfall29 mm / 1.1 in☀️ dry
Rainy days12 days
Humidity80%💦 very humid
Dew point20°C / 69°F
Sunshine10.8 h/day
Daylight11.7 h
Wind14 km/h / 9 mph
Air quality (US AQI)34🍃 good

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

Crowds in Moroni 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.

Busyschool holidays in 4 of the markets that fill it, one of its best months for weather(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Moroni'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).

Best weatherMoroni's weather peaks August–October, best around September.

August includes Humpbacks in the channel.

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Best weatherFair weatherToughest weather

What's on in Moroni in August

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

  • Nature

    Humpbacks in the channel

    1 Jul – 31 Oct · usuallyWhale season

    Humpbacks come up the Mozambique Channel to calve and are regularly seen from the Grande Comore coast road in the southern winter. Trips are small operators and dive boats rather than a whale-watching industry.

What's on around the world in August →

Where is Moroni?

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Moroni in August — FAQ

Is August a good time to visit Moroni?
August in Moroni: hot, dry, with clean air — fine if you can take sticky heat. It ranks #2 of 12 months for Moroni on SeasonMap's comfort score (93/100).
What is the weather like in Moroni in August?
In August, Moroni averages a daily high of 29.4°C and a low of 21.5°C, with about 28.7 mm of rain over roughly 11.5 rainy days.
What is the air quality in Moroni in August?
Moroni has a mean US Air Quality Index of about 34 in August.