Bol weather in July
In July, Bol sees average daytime highs of 35°C and overnight lows near 27°C, with 56 mm of rain across 9.8 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.
Highs ease over the month, from about 37°C in the first days to 34°C by the end. The sky is clear or mostly clear about 31% of the time in July, and the air most often feels oppressive.
Daylight stretches from about 12 h 48 min at the start of July to 12 h 36 min by month's end. Set against the rest of the year, July is Bol's 11th-clearest and 7th-windiest month. For the whole year in context, see Bol's year-round climate.
- Daytime high
- 35°
- 7th warmest
- Overnight low
- 27°
- 10th coldest
- Rainfall
- 56 mm
- 9.8 wet days
- Daylight
- 12 h 42 min
- 5:45 AM – 6:28 PM
- Cloud cover
- 55%
- 11th clearest
- Wind
- 14 km/h
- 7th windiest
- Solar energy
- 6.17 kWh/m²
- Travel score
- 2.3
- out of 10
Bol is city in Chad.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Highs ease over the month, from about 37°C in the first days to 34°C by the end.
A typical July day in Bol reaches about 35°C in the afternoon and slips back to 27°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 39°C. Set against its neighbours, July runs about 4°C cooler than June and about 3°C warmer than August.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 33 |
| Avg low (°C) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 38 | 27 |
| 2 | 38 | 27 |
| 3 | 37 | 27 |
| 4 | 37 | 27 |
| 5 | 37 | 27 |
| 6 | 37 | 27 |
| 7 | 37 | 27 |
| 8 | 37 | 27 |
| 9 | 36 | 27 |
| 10 | 36 | 27 |
| 11 | 36 | 27 |
| 12 | 36 | 27 |
| 13 | 36 | 27 |
| 14 | 36 | 27 |
| 15 | 35 | 27 |
| 16 | 35 | 26 |
| 17 | 35 | 26 |
| 18 | 35 | 26 |
| 19 | 35 | 26 |
| 20 | 35 | 26 |
| 21 | 35 | 26 |
| 22 | 34 | 26 |
| 23 | 34 | 26 |
| 24 | 34 | 26 |
| 25 | 34 | 26 |
| 26 | 34 | 26 |
| 27 | 34 | 26 |
| 28 | 34 | 26 |
| 29 | 34 | 26 |
| 30 | 34 | 26 |
| 31 | 33 | 26 |
How July really feels in Bol
Once humidity and wind are folded in, July averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Bol weather by month
How July compares with the rest of the year at a glance. July is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.
| 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 July
The sky is clear or mostly clear about 31% of the time in July.
Beyond those clear spells, partly cloudy skies cover about 24% of July, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 73 | 72 | 71 | 70 | 69 | 68 | 66 | 64 | 62 | 61 | 59 | 57 | 57 | 55 | 55 | 54 | 53 | 53 | 52 | 52 | 51 | 50 | 49 | 48 | 48 | 48 | 46 | 45 | 44 | 42 | 41 |
| Cloudier (%) | 27 | 28 | 29 | 30 | 31 | 32 | 34 | 36 | 38 | 39 | 41 | 43 | 43 | 45 | 45 | 46 | 47 | 47 | 48 | 48 | 49 | 50 | 51 | 52 | 52 | 52 | 54 | 55 | 56 | 58 | 59 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 73 | 27 |
| 2 | 72 | 28 |
| 3 | 71 | 29 |
| 4 | 70 | 30 |
| 5 | 69 | 31 |
| 6 | 68 | 32 |
| 7 | 66 | 34 |
| 8 | 64 | 36 |
| 9 | 62 | 38 |
| 10 | 61 | 39 |
| 11 | 59 | 41 |
| 12 | 57 | 43 |
| 13 | 57 | 43 |
| 14 | 55 | 45 |
| 15 | 55 | 45 |
| 16 | 54 | 46 |
| 17 | 53 | 47 |
| 18 | 53 | 47 |
| 19 | 52 | 48 |
| 20 | 52 | 48 |
| 21 | 51 | 49 |
| 22 | 50 | 50 |
| 23 | 49 | 51 |
| 24 | 48 | 52 |
| 25 | 48 | 52 |
| 26 | 48 | 52 |
| 27 | 46 | 54 |
| 28 | 45 | 55 |
| 29 | 44 | 56 |
| 30 | 42 | 58 |
| 31 | 41 | 59 |
Chance of precipitation in July
Bol gets around 56 mm of rain over 9.8 wet days in July. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 32% and peaks near 45% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 18 | 18 | 19 | 20 | 20 | 21 | 22 | 23 | 24 | 26 | 27 | 28 | 30 | 31 | 32 | 34 | 35 | 36 | 37 | 38 | 38 | 39 | 40 | 40 | 41 | 42 | 42 | 43 | 44 | 44 | 45 |
| Rain chance (%) | |
|---|---|
| 1 | 18 |
| 2 | 18 |
| 3 | 19 |
| 4 | 20 |
| 5 | 20 |
| 6 | 21 |
| 7 | 22 |
| 8 | 23 |
| 9 | 24 |
| 10 | 26 |
| 11 | 27 |
| 12 | 28 |
| 13 | 30 |
| 14 | 31 |
| 15 | 32 |
| 16 | 34 |
| 17 | 35 |
| 18 | 36 |
| 19 | 37 |
| 20 | 38 |
| 21 | 38 |
| 22 | 39 |
| 23 | 40 |
| 24 | 40 |
| 25 | 41 |
| 26 | 42 |
| 27 | 42 |
| 28 | 43 |
| 29 | 44 |
| 30 | 44 |
| 31 | 45 |
Humidity in July
Most of July feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the oppressive band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 13 | 12 | 11 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | 44 | 44 | 44 | 43 | 42 | 42 | 40 | 39 | 37 | 35 | 33 | 31 | 29 | 27 | 25 | 23 | 21 | 19 | 17 | 15 | 14 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 6 | 5 | 4 |
| Oppressive (%) | 39 | 41 | 42 | 44 | 45 | 47 | 49 | 52 | 54 | 58 | 61 | 64 | 65 | 68 | 70 | 73 | 75 | 77 | 79 | 81 | 82 | 84 | 86 | 86 | 87 | 88 | 88 | 89 | 88 | 89 | 89 |
| Miserable (%) | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 1 | 3 | 13 | 44 | 39 | 0 |
| 2 | 1 | 2 | 12 | 44 | 41 | 0 |
| 3 | 1 | 2 | 11 | 44 | 42 | 0 |
| 4 | 1 | 2 | 11 | 43 | 44 | 0 |
| 5 | 1 | 2 | 10 | 42 | 45 | 1 |
| 6 | 0 | 1 | 9 | 42 | 47 | 1 |
| 7 | 0 | 1 | 8 | 40 | 49 | 1 |
| 8 | 0 | 1 | 7 | 39 | 52 | 1 |
| 9 | 0 | 1 | 7 | 37 | 54 | 1 |
| 10 | 0 | 0 | 6 | 35 | 58 | 1 |
| 11 | 0 | 0 | 5 | 33 | 61 | 1 |
| 12 | 0 | 0 | 4 | 31 | 64 | 1 |
| 13 | 0 | 0 | 4 | 29 | 65 | 2 |
| 14 | 0 | 0 | 3 | 27 | 68 | 2 |
| 15 | 0 | 0 | 3 | 25 | 70 | 2 |
| 16 | 0 | 0 | 2 | 23 | 73 | 2 |
| 17 | 0 | 0 | 2 | 21 | 75 | 2 |
| 18 | 0 | 0 | 2 | 19 | 77 | 2 |
| 19 | 0 | 0 | 1 | 17 | 79 | 3 |
| 20 | 0 | 0 | 1 | 15 | 81 | 3 |
| 21 | 0 | 0 | 1 | 14 | 82 | 3 |
| 22 | 0 | 0 | 1 | 12 | 84 | 3 |
| 23 | 0 | 0 | 0 | 11 | 86 | 3 |
| 24 | 0 | 0 | 0 | 10 | 86 | 4 |
| 25 | 0 | 0 | 0 | 9 | 87 | 4 |
| 26 | 0 | 0 | 0 | 8 | 88 | 4 |
| 27 | 0 | 0 | 0 | 7 | 88 | 5 |
| 28 | 0 | 0 | 0 | 6 | 89 | 5 |
| 29 | 0 | 0 | 0 | 6 | 88 | 6 |
| 30 | 0 | 0 | 0 | 5 | 89 | 6 |
| 31 | 0 | 0 | 0 | 4 | 89 | 7 |
Wind in July
Winds average 14 km/h in July.
Across July, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 14 | light breeze |
| 2 | 14 | light breeze |
| 3 | 14 | light breeze |
| 4 | 14 | light breeze |
| 5 | 14 | light breeze |
| 6 | 14 | light breeze |
| 7 | 14 | light breeze |
| 8 | 14 | light breeze |
| 9 | 14 | light breeze |
| 10 | 14 | light breeze |
| 11 | 14 | light breeze |
| 12 | 14 | light breeze |
| 13 | 14 | light breeze |
| 14 | 14 | light breeze |
| 15 | 14 | light breeze |
| 16 | 14 | light breeze |
| 17 | 14 | light breeze |
| 18 | 13 | light breeze |
| 19 | 13 | light breeze |
| 20 | 13 | light breeze |
| 21 | 13 | light breeze |
| 22 | 13 | light breeze |
| 23 | 13 | light breeze |
| 24 | 13 | light breeze |
| 25 | 13 | light breeze |
| 26 | 13 | light breeze |
| 27 | 13 | light breeze |
| 28 | 13 | light breeze |
| 29 | 13 | light breeze |
| 30 | 13 | light breeze |
| 31 | 13 | light breeze |
Sunrise & sunset in July
Daylight runs from about 12 h 48 min at the start of July to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over July. Sunrise moves from 5:41 AM to 5:49 AM, and sunset from 6:28 PM to 6:26 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 |
| Sunrise (AM) | 5:41 | 5:41 | 5:41 | 5:42 | 5:42 | 5:42 | 5:43 | 5:43 | 5:43 | 5:43 | 5:44 | 5:44 | 5:44 | 5:44 | 5:45 | 5:45 | 5:45 | 5:46 | 5:46 | 5:46 | 5:46 | 5:47 | 5:47 | 5:47 | 5:47 | 5:48 | 5:48 | 5:48 | 5:48 | 5:49 | 5:49 |
| Sunset (PM) | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:27 | 6:27 | 6:27 | 6:27 | 6:26 | 6:26 | 6:26 | 6:26 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.8 | 5:41 | 6:28 |
| 2 | 12.8 | 5:41 | 6:28 |
| 3 | 12.8 | 5:41 | 6:28 |
| 4 | 12.8 | 5:42 | 6:28 |
| 5 | 12.8 | 5:42 | 6:28 |
| 6 | 12.8 | 5:42 | 6:29 |
| 7 | 12.8 | 5:43 | 6:29 |
| 8 | 12.8 | 5:43 | 6:29 |
| 9 | 12.8 | 5:43 | 6:29 |
| 10 | 12.8 | 5:43 | 6:29 |
| 11 | 12.8 | 5:44 | 6:29 |
| 12 | 12.7 | 5:44 | 6:29 |
| 13 | 12.7 | 5:44 | 6:29 |
| 14 | 12.7 | 5:44 | 6:29 |
| 15 | 12.7 | 5:45 | 6:29 |
| 16 | 12.7 | 5:45 | 6:28 |
| 17 | 12.7 | 5:45 | 6:28 |
| 18 | 12.7 | 5:46 | 6:28 |
| 19 | 12.7 | 5:46 | 6:28 |
| 20 | 12.7 | 5:46 | 6:28 |
| 21 | 12.7 | 5:46 | 6:28 |
| 22 | 12.7 | 5:47 | 6:28 |
| 23 | 12.7 | 5:47 | 6:28 |
| 24 | 12.7 | 5:47 | 6:27 |
| 25 | 12.7 | 5:47 | 6:27 |
| 26 | 12.7 | 5:48 | 6:27 |
| 27 | 12.6 | 5:48 | 6:27 |
| 28 | 12.6 | 5:48 | 6:26 |
| 29 | 12.6 | 5:48 | 6:26 |
| 30 | 12.6 | 5:49 | 6:26 |
| 31 | 12.6 | 5:49 | 6:26 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.17 kWh/m².
For context, solar energy here swings from a low near 5.68 kWh/m² to a high of 7.37 kWh/m² in April across the year — July's 6.17 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.5 | Intense |
| 2 | 6.4 | Intense |
| 3 | 6.4 | Intense |
| 4 | 6.4 | Intense |
| 5 | 6.4 | Intense |
| 6 | 6.4 | Intense |
| 7 | 6.3 | Intense |
| 8 | 6.3 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.3 | Intense |
| 11 | 6.3 | Intense |
| 12 | 6.2 | Intense |
| 13 | 6.2 | Intense |
| 14 | 6.2 | Intense |
| 15 | 6.2 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.0 | Intense |
| 21 | 6.0 | Intense |
| 22 | 6.0 | Bright |
| 23 | 6.0 | Bright |
| 24 | 6.0 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.9 | Bright |
| 27 | 5.9 | Bright |
| 28 | 5.9 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.8 | Bright |
| 31 | 5.8 | Bright |
Hazard calendar for Bol
In July, Bol sits inside 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 July a good time to visit Bol?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a weaker month for outdoor sightseeing in Bol.
What to pack for Bol in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Bol sees daytime highs around 35°C and nights near 27°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.
UV index in Bol in July
Clear-sky midday UV in July peaks 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 July
Average fine-particle pollution (PM2.5) through the year — so you can see where July 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).