Isiro in Summer
In summer (June, July and August), Isiro sees average daytime highs around 27°C and overnight lows near 20°C, with 461 mm of rain over about 76 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 3% of the time across summer, and the air most often feels muggy.
Summer is Isiro's 2nd-best season to visit on our travel score. For the whole year in context, see Isiro's year-round climate.
- Avg daytime high
- 27°C
- coldest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 461 mm
- 76 wet days
- Avg wind
- 4 km/h
- Travel score
- 4.1
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Isiro in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Isiro reaches about 27°C and drops to 20°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Isiro
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Isiro weather by month
How the three summer months (June, July and August) 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 | 31° / 20° | 37 | 6.6 | 11.9 | 4.7 |
| Feb | 32° / 20° | 60 | 9.7 | 11.9 | 4.0 |
| Mar | 30° / 21° | 146 | 20.3 | 12 | 3.7 |
| Apr | 28° / 21° | 188 | 23.9 | 12.1 | 3.8 |
| May | 28° / 21° | 152 | 24.4 | 12.1 | 4.1 |
| Jun | 27° / 20° | 134 | 24 | 12.2 | 4.1 |
| Jul | 27° / 20° | 149 | 25.2 | 12.1 | 4.2 |
| Aug | 27° / 20° | 178 | 26.3 | 12.1 | 4.0 |
| Sep | 27° / 20° | 190 | 26.5 | 12 | 3.8 |
| Oct | 27° / 20° | 229 | 28.3 | 11.9 | 3.6 |
| Nov | 27° / 20° | 201 | 24 | 11.9 | 4.1 |
| Dec | 29° / 20° | 58 | 10.1 | 11.8 | 5.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 3% of the time across summer.
Chance of precipitation in Summer
Isiro gets around 461 mm of rain over 76 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 06 min in early June to 12 h 06 min by late August. 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 4.7 kWh/m².
Is summer a good time to visit Isiro?
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 Isiro for sightseeing.
What to pack for Isiro in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Isiro sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 76 days see rain.
UV index in Isiro in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Isiro peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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) | 10 | 11 | 14 | 13 | 11 | 10 | 9 | 12 | 12 | 13 | 10 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 11 | Extreme |
| Mar | 14 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 9 | Very high |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 10 | Extreme |
| Dec | 10 | Very high |
Air quality in Isiro 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 Isiro is worst in February — around 130 µg/m³ PM2.5 (unhealthy), about 14.4× the cleanest month (October, 9 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) | 61 | 130 | 49 | 18 | 10 | 15 | 16 | 12 | 9 | 9 | 15 | 36 |
| Level | Unhealthy | Unhealthy | Poor | Moderate | Good | Moderate | Moderate | Moderate | Good | Good | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 61 | Unhealthy |
| Feb | 130 | Unhealthy |
| Mar | 49 | Poor |
| Apr | 18 | Moderate |
| May | 10 | Good |
| Jun | 15 | Moderate |
| Jul | 16 | Moderate |
| Aug | 12 | Moderate |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 15 | Moderate |
| Dec | 36 | Poor |
Where is Isiro?
Isiro sits at 2.8°N, 27.6°E, 761 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Wamba, 81 km away.
Topography around Isiro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Isiro.
Within 3 km, the terrain around Isiro has only modest variations in elevation — a maximum elevation change of 60 m around an average of 748 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 286 m; within 80 km, significant variations in elevation — a maximum elevation change of 469 m.
The land around Isiro is covered by artificial surfaces (36%), grassland (32%) and trees (31%) within 3 km, trees (86%) within 16 km, and trees (91%) within 80 km.
Democratic Republic of the Congo travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 42% of US
- price level, 2025
- GDP per capita
- $807
- 2025
- Happiness
- 3.8 / 10
- World Happiness, 2025
- Safe drinking water
- 12%
- of population, 2024
- Road deaths
- 34.9
- per 100k/yr, 2019
- Income group
- Low
- World Bank
- English
- Very low
- EF EPI 400
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 Isiro (2.7739°, 27.616°, elevation 761 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.