Moroni weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: August – October
What is the weather like in Moroni in September?
In September, Moroni is hot: daytime highs average 27 °C, and even at night it stays warm at around 23 °C. The sea averages 26.0 °C – lovely and warm for swimming. The sun shines for around 9 hours a day. Rain falls on about 8 days, adding up to 22 mm. The air is often humid and muggy. All in all, September is an excellent month for a holiday in Moroni.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 84 | 88 | 81 |
| Day | 27° | 27° | 28° |
| Night | 23° | 23° | 24° |
| Sea | 26° | 26° | 27° |
| Sun | 9 h | 9 h | 9 h |
| Rain days | 11 | 8 | 9 |
More details for September
- Daylight
- 12 h 1 min06:02 – 18:03
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 29 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 34 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+3Indian/Comoro
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %97 %
- Few rainy daysweight 30 %69 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Moroni in September: quick answers
Is Moroni hot in September?
Yes. In September, Moroni is hot: daytime highs average 27 °C and nights stay around 23 °C.
Can you swim in Moroni in September?
Yes. In September the sea averages 26.0 °C – lovely and warm for swimming.
Does it rain much in Moroni in September?
Rain falls on about 8 days, adding up to 22 mm.
Moroni month by month
The whole year in MoroniAll destinations: ComorosWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences