Mossendjo in Summer
In summer (December, January and February), Mossendjo sees average daytime highs around 29°C and overnight lows near 22°C, with 754 mm of rain over about 81 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 1% of the time across summer, and the air most often feels oppressive.
Summer is Mossendjo's weakest season of the year to visit on our travel score. For the whole year in context, see Mossendjo's year-round climate.
- Avg daytime high
- 29°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 754 mm
- 81 wet days
- Avg wind
- 5 km/h
- Travel score
- 2.9
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Mossendjo in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Mossendjo reaches about 29°C and drops to 22°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Mossendjo
Once humidity and wind are folded in, summer brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Mossendjo 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 | 29° / 22° | 249 | 27.7 | 12.2 | 3.0 |
| Feb | 30° / 22° | 201 | 24 | 12.1 | 2.9 |
| Mar | 30° / 22° | 191 | 26 | 12 | 3.0 |
| Apr | 30° / 22° | 212 | 25.6 | 11.9 | 3.0 |
| May | 29° / 22° | 137 | 21.7 | 11.9 | 3.7 |
| Jun | 27° / 20° | 16 | 3.9 | 11.8 | 6.9 |
| Jul | 26° / 19° | 6 | 1.5 | 11.8 | 7.4 |
| Aug | 26° / 19° | 11 | 2.6 | 11.9 | 7.1 |
| Sep | 28° / 21° | 40 | 10.5 | 12 | 5.7 |
| Oct | 29° / 21° | 210 | 26.6 | 12.1 | 3.2 |
| Nov | 29° / 21° | 309 | 28.5 | 12.1 | 2.9 |
| Dec | 29° / 21° | 304 | 29.3 | 12.2 | 2.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 1% of the time across summer.
Chance of precipitation in Summer
Mossendjo gets around 754 mm of rain over 81 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 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early December to 12 h 06 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 4.5 kWh/m².
Hazard calendar for Mossendjo
In summer, Mossendjo overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Mossendjo's rainy season runs October–April, when most of the year's rain falls.
Is summer a good time to visit Mossendjo?
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 weaker month for outdoor sightseeing in Mossendjo.
What to pack for Mossendjo in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mossendjo sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 81 days see rain.
UV index in Mossendjo in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mossendjo peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 7 (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) | 13 | 13 | 15 | 13 | 10 | 7 | 9 | 9 | 12 | 14 | 11 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | High | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 13 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 7 | High |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 12 | Extreme |
| Oct | 14 | Extreme |
| Nov | 11 | Extreme |
| Dec | 10 | Extreme |
Air quality in Mossendjo in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Mossendjo is worst in July — around 28 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 16 | 19 | 14 | 12 | 19 | 28 | 28 | 25 | 18 | 11 | 10 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 19 | Moderate |
| Mar | 14 | Moderate |
| Apr | 12 | Moderate |
| May | 19 | Moderate |
| Jun | 28 | Moderate |
| Jul | 28 | Moderate |
| Aug | 25 | Moderate |
| Sep | 18 | Moderate |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 14 | Moderate |
Where is Mossendjo?
Mossendjo sits at 2.9°S, 12.7°E, 448 m above sea level, in Republic of the Congo. The nearest listed city is Sibiti, 108 km away.
Topography around Mossendjo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mossendjo.
Within 3 km, the terrain around Mossendjo has only modest variations in elevation — a maximum elevation change of 133 m around an average of 448 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 338 m; within 80 km, large variations in elevation — a maximum elevation change of 751 m.
The land around Mossendjo is covered by trees (65%) and grassland (29%) within 3 km, trees (93%) within 16 km, and trees (88%) within 80 km.
Republic of the Congo travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 35% of US
- price level, 2025
- GDP per capita
- $2,515
- 2025
- Happiness
- 4.5 / 10
- World Happiness, 2025
- Safe drinking water
- 46%
- of population, 2021
- Road deaths
- 29.7
- 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 Mossendjo (-2.9497°, 12.7042°, elevation 448 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.