Bol in Summer
In summer (June, July and August), Bol sees average daytime highs around 36°C and overnight lows near 27°C, with 169 mm of rain over about 28 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs ease from about 40°C in early June to 33°C by late August. The sky is clear or mostly clear about 36% of the time across summer, and the air most often feels oppressive.
Summer is Bol's 3rd-best season to visit on our travel score. For the whole year in context, see Bol's year-round climate.
- Avg daytime high
- 36°C
- 3rd-warmest season
- Avg overnight low
- 27°C
- Rainfall
- 169 mm
- 28 wet days
- Avg wind
- 13 km/h
- Travel score
- 2.0
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Bol in Summer
Over the season highs ease from about 40°C in early June to 33°C by late August.
A typical summer day in Bol reaches about 36°C and drops to 27°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Bol
Once humidity and wind are folded in, summer brings about 92 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.
Bol 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° / 15° | 0 | 0 | 11.3 | 6.1 |
| Feb | 34° / 18° | 0 | 0 | 11.6 | 4.0 |
| Mar | 38° / 22° | 0 | 0 | 11.9 | 1.4 |
| Apr | 41° / 26° | 1 | 0.3 | 12.3 | 0.0 |
| May | 41° / 28° | 6 | 2.1 | 12.6 | 0.0 |
| Jun | 39° / 28° | 10 | 3.7 | 12.8 | 0.5 |
| Jul | 35° / 27° | 56 | 9.8 | 12.7 | 2.3 |
| Aug | 33° / 25° | 103 | 14.2 | 12.4 | 3.1 |
| Sep | 36° / 26° | 34 | 6 | 12.1 | 2.2 |
| Oct | 38° / 25° | 5 | 1.4 | 11.7 | 1.4 |
| Nov | 35° / 20° | 0 | 0 | 11.4 | 3.1 |
| Dec | 32° / 16° | 0 | 0 | 11.2 | 5.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 36% of the time across summer.
Chance of precipitation in Summer
Bol gets around 169 mm of rain over 28 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 13 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 42 min in early June to 12 h 18 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 6.2 kWh/m².
Hazard calendar for Bol
In summer, Bol overlaps its dust season. The full year is below, with each hazard's peak months called out.
Bol sees dust haze year-round, heaviest in March.
Is summer a good time to visit Bol?
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 Bol.
What to pack for Bol in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Bol sees daytime highs around 36°C and nights near 27°C. Pack light clothes, rain gear and sun protection. About 28 days see rain.
UV index in Bol in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bol peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (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 | 10 | 13 | 11 | 9 | 10 | 11 | 13 | 11 | 11 | 9 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 10 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 9 | Very high |
| Jun | 10 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 7 | Very high |
Air quality in Bol 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 Bol is worst in February — around 121 µg/m³ PM2.5 (unhealthy), about 5.1× the cleanest month (August, 24 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) | 116 | 121 | 108 | 78 | 51 | 42 | 31 | 24 | 25 | 56 | 73 | 111 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Moderate | Moderate | Moderate | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 116 | Unhealthy |
| Feb | 121 | Unhealthy |
| Mar | 108 | Unhealthy |
| Apr | 78 | Unhealthy |
| May | 51 | Poor |
| Jun | 42 | Poor |
| Jul | 31 | Moderate |
| Aug | 24 | Moderate |
| Sep | 25 | Moderate |
| Oct | 56 | Unhealthy |
| Nov | 73 | Unhealthy |
| Dec | 111 | Unhealthy |
Where is Bol?
Bol sits at 13.5°N, 14.7°E, 291 m above sea level, in Chad. The nearest listed city is Blangwa, 79 km away.
Topography around Bol
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bol.
Within 3 km, the terrain around Bol has only modest variations in elevation — a maximum elevation change of 20 m around an average of 284 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 32 m; within 80 km, only modest variations in elevation — a maximum elevation change of 80 m.
The land around Bol is covered by grassland (42%) and wetland (29%) within 3 km, grassland (52%) and wetland (21%) within 16 km, and grassland (63%) and wetland (21%) within 80 km.
Chad travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type C / D / E / F
- 220 V · 50 Hz
- Prices
- ≈ 35% of US
- price level, 2025
- GDP per capita
- $1,022
- 2025
- Happiness
- 4.4 / 10
- World Happiness, 2025
- Safe drinking water
- 6%
- of population, 2024
- Road deaths
- 32.4
- 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 Bol (13.4673°, 14.7135°, elevation 291 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.