Karusi in Summer
In summer (December, January and February), Karusi sees average daytime highs around 25°C and overnight lows near 16°C, with 621 mm of rain over about 71 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 25°C. The sky is clear or mostly clear about 4% of the time across summer, and the air most often feels humid.
Summer is Karusi's weakest season of the year to visit on our travel score. For the whole year in context, see Karusi's year-round climate.
- Avg daytime high
- 25°C
- 3rd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 621 mm
- 71 wet days
- Avg wind
- 5 km/h
- Travel score
- 4.5
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Karusi in Summer
Across summer, daytime highs hold fairly steady around 25°C.
A typical summer day in Karusi reaches about 25°C and drops to 16°C overnight. The warmest of the three months is February, the coolest December.
Karusi 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 | 25° / 16° | 201 | 23.3 | 12.2 | 4.6 |
| Feb | 26° / 16° | 178 | 21.4 | 12.1 | 4.5 |
| Mar | 25° / 16° | 217 | 26.3 | 12 | 4.2 |
| Apr | 24° / 16° | 210 | 25.3 | 11.9 | 4.2 |
| May | 25° / 16° | 88 | 13.2 | 11.9 | 6.3 |
| Jun | 25° / 15° | 9 | 2 | 11.8 | 7.8 |
| Jul | 26° / 15° | 3 | 0.7 | 11.8 | 8.0 |
| Aug | 27° / 16° | 17 | 2.5 | 11.9 | 7.4 |
| Sep | 27° / 17° | 52 | 7.2 | 12 | 6.6 |
| Oct | 26° / 16° | 161 | 17.9 | 12.1 | 5.3 |
| Nov | 25° / 16° | 247 | 25.8 | 12.1 | 4.1 |
| Dec | 25° / 15° | 242 | 25.9 | 12.2 | 4.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Karusi gets around 621 mm of rain over 71 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — 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 5.7 kWh/m².
Hazard calendar for Karusi
In summer, Karusi overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Karusi's rainy season runs October–April, when most of the year's rain falls.
Is summer a good time to visit Karusi?
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 Karusi for sightseeing.
What to pack for Karusi in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Karusi sees daytime highs around 25°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 71 days see rain.
UV index in Karusi in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Karusi peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).
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) | 11 | 15 | 16 | 15 | 12 | 10 | 11 | 11 | 14 | 14 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 15 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 14 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Karusi 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 Karusi is worst in August — around 68 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 60 | 59 | 55 | 51 | 55 | 65 | 64 | 68 | 66 | 57 | 55 | 57 |
| Level | Unhealthy | Unhealthy | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 60 | Unhealthy |
| Feb | 59 | Unhealthy |
| Mar | 55 | Poor |
| Apr | 51 | Poor |
| May | 55 | Unhealthy |
| Jun | 65 | Unhealthy |
| Jul | 64 | Unhealthy |
| Aug | 68 | Unhealthy |
| Sep | 66 | Unhealthy |
| Oct | 57 | Unhealthy |
| Nov | 55 | Poor |
| Dec | 57 | Unhealthy |
Where is Karusi?
Karusi sits at 3.1°S, 30.2°E, 1,627 m above sea level, in Burundi. The nearest listed city is Zanandore, 18 km away.
Topography around Karusi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Karusi.
Within 3 km, the terrain around Karusi has only modest variations in elevation — a maximum elevation change of 181 m around an average of 1,552 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 525 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,689 m.
The land around Karusi is covered by cropland (30%), trees (29%) and grassland (26%) within 3 km, cropland (36%), grassland (29%) and trees (23%) within 16 km, and grassland (34%) and cropland (34%) within 80 km.
Burundi travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $234
- 2025
- Happiness
- 3.8 / 10
- World Happiness, 2020
- Homicide rate
- 5.6
- per 100k, 2016
- Road deaths
- 35.5
- per 100k/yr, 2019
- Income group
- Low
- 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 Karusi (-3.1014°, 30.1628°, elevation 1,627 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.