Moroni in Summer
In summer (December, January and February), Moroni sees average daytime highs around 27°C and overnight lows near 25°C, with 617 mm of rain over about 65 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 10% of the time across summer, and the air most often feels oppressive.
Summer is Moroni's weakest season of the year to visit on our travel score. Moroni has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Moroni's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 25°C
- Rainfall
- 617 mm
- 65 wet days
- Avg wind
- 9 km/h
- Travel score
- 4.5
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Moroni in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Moroni reaches about 27°C and drops to 25°C overnight. The warmest of the three months is December, the coolest December.
Moroni weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 25° | 240 | 22.8 | 12.6 | 4.4 |
| Feb | 27° / 25° | 212 | 21.4 | 12.4 | 4.2 |
| Mar | 27° / 25° | 199 | 25.8 | 12.1 | 4.1 |
| Apr | 27° / 24° | 124 | 22.6 | 11.7 | 4.6 |
| May | 26° / 24° | 64 | 17.1 | 11.5 | 5.8 |
| Jun | 25° / 22° | 44 | 15.2 | 11.3 | 6.3 |
| Jul | 24° / 22° | 40 | 15.2 | 11.4 | 6.5 |
| Aug | 24° / 22° | 27 | 10.3 | 11.6 | 7.3 |
| Sep | 25° / 22° | 20 | 7.4 | 11.9 | 7.6 |
| Oct | 26° / 23° | 33 | 9 | 12.3 | 7.1 |
| Nov | 27° / 24° | 69 | 13.2 | 12.5 | 6.2 |
| Dec | 27° / 25° | 166 | 21 | 12.7 | 4.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 10% of the time across summer.
Chance of precipitation in Summer
Moroni gets around 617 mm of rain over 65 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 36 min in early December to 12 h 18 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.3 kWh/m².
Hazard calendar for Moroni
In summer, Moroni overlaps its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.
Moroni sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Moroni's monsoon runs December–April, when most of the year's rain falls.
Is summer a good time to visit Moroni?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Moroni for sightseeing.
What to pack for Moroni in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Moroni sees daytime highs around 27°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 65 days see rain.
Sea temperature near Moroni in Summer
The nearest coast averages about 29°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 16 km away) is warmest in March at about 29°C and coldest in August near 26°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 29 | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 27 | 28 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 28 | Tropical |
| Jun | 27 | Warm |
| Jul | 26 | Warm |
| Aug | 26 | Warm |
| Sep | 26 | Warm |
| Oct | 27 | Warm |
| Nov | 28 | Warm |
| Dec | 29 | Tropical |
UV index in Moroni in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Moroni peaks around March 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 14 | 14 | 13 | 10 | 9 | 9 | 11 | 13 | 13 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 14 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Moroni?
Moroni sits at 11.7°S, 43.3°E, 27 m above sea level, in Comoros. The nearest listed city is Fomboni, 84 km away.
Topography around Moroni
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Moroni.
Within 3 km, the terrain around Moroni has significant variations in elevation — a maximum elevation change of 484 m around an average of 94 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,351 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,346 m.
The land around Moroni is covered by trees (41%), water (36%) and artificial surfaces (23%) within 3 km, water (51%) and trees (32%) within 16 km, and water (90%) within 80 km.
Comoros travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 49% of US
- price level, 2025
- GDP per capita
- $2,056
- 2025
- Happiness
- 3.9 / 10
- World Happiness, 2025
- Road deaths
- 26.6
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Moroni (-11.7022°, 43.2551°, elevation 27 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.