Bol weather in May

In May, Bol sees average daytime highs of 41°C and overnight lows near 28°C, with 6 mm of rain across 2.1 wet days and about 12.6 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 41°C through the month. The sky is clear or mostly clear about 66% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Bol's 6th-clearest and 10th-windiest month. For the whole year in context, see Bol's year-round climate.

Daytime high
41°
1st warmest
Overnight low
28°
11th coldest
Rainfall
6 mm
2.1 wet days
Daylight
12 h 36 min
5:39 AM – 6:16 PM
Cloud cover
33%
6th clearest
Wind
12 km/h
10th windiest
Solar energy
7.1 kWh/m²
Travel score
0.0
out of 10

Bol is city in Chad.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 41°C through the month.

A typical May day in Bol reaches about 41°C in the afternoon and slips back to 28°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 38°C and 43°C. Set against its neighbours, May runs on par with April and about 2°C warmer than June.

20°25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
14127
24127
34127
44127
54127
64127
74127
84127
94127
104127
114127
124127
134127
144128
154128
164128
174128
184128
194128
204128
214128
224128
234128
244128
254128
264128
274128
284128
294028
304028
314028

How May really feels in Bol

Once humidity and wind are folded in, May 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.

Days feeling ≥ 32°C
31
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Bol weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 15°0011.36.1
Feb34° / 18°0011.64.0
Mar38° / 22°0011.91.4
Apr41° / 26°10.312.30.0
May41° / 28°62.112.60.0
Jun39° / 28°103.712.80.5
Jul35° / 27°569.812.72.3
Aug33° / 25°10314.212.43.1
Sep36° / 26°34612.12.2
Oct38° / 25°51.411.71.4
Nov35° / 20°0011.43.1
Dec32° / 16°0011.25.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 21%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27624
37624
47624
57624
67624
77822
87822
97822
107921
117921
127921
138020
148020
158119
168119
178119
188218
198218
208218
218119
228119
238119
248119
258119
268020
278020
287921
297921
307921
317921

Chance of precipitation in May

Any precipitation

Bol gets around 6 mm of rain over 2.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 7% and peaks near 12% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
13
23
33
43
54
64
74
84
94
105
115
125
135
145
156
166
177
187
197
208
218
229
239
2410
2510
2611
2711
2811
2912
3012
3112

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 26% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1601215121
2591115132
3571116142
4561116152
5561116152
6541117162
7551017162
8531017173
9521117173
10521117173
11521117173
12511117183
13501117184
14501117184
15491117194
16481117195
17471118205
18451118215
19431218226
20411219236
21391219246
22361220256
23341221267
24321221277
25301222287
26281223298
27261224308
28241124328
29231125329
30211125349
31201126359

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:44 AM to 5:37 AM, and sunset from 6:13 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:446:13
212.55:446:13
312.55:436:13
412.55:436:13
512.55:426:13
612.55:426:14
712.55:426:14
812.55:416:14
912.65:416:14
1012.65:416:14
1112.65:406:15
1212.65:406:15
1312.65:406:15
1412.65:396:15
1512.65:396:16
1612.65:396:16
1712.65:396:16
1812.65:386:17
1912.65:386:17
2012.75:386:17
2112.75:386:17
2212.75:386:18
2312.75:376:18
2412.75:376:18
2512.75:376:19
2612.75:376:19
2712.75:376:19
2812.75:376:19
2912.75:376:20
3012.75:376:20
3112.75:376:20

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.1 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 — May's 7.1 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.2Intense
177.1Intense
187.1Intense
197.1Intense
207.1Intense
217.1Intense
227.1Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
286.9Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in May

Hazard calendar for Bol

In seasonPeak

In May, 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.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Bol?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
11th-best month of the year
2.2
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Bol.

What to pack for Bol in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Bol sees daytime highs around 41°C and nights near 28°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Bol in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highAug 18UV 13Dec 16UV 8
UV index (midday)Level
Jan10Very high
Feb10Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun10Extreme
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec7Very high

Air quality in Bol in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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).

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyFeb 12120 µg/m³Aug 2224 µg/m³
PM2.5 (µg/m³)Level
Jan116Unhealthy
Feb121Unhealthy
Mar108Unhealthy
Apr78Unhealthy
May51Poor
Jun42Poor
Jul31Moderate
Aug24Moderate
Sep25Moderate
Oct56Unhealthy
Nov73Unhealthy
Dec111Unhealthy
Location & terrain

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.

MassakoryGamboruMassaguetKukawaMongunoN'Djamena

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.

3 km
20 m
16 km
32 m
80 km
80 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetland
May weather nearby: Blangwa 79 km · Mao 97 km · Massakory 122 km · Gamboru 133 km · Massaguet 135 km · Kukawa 138 km · Monguno 149 km · N'Djamena 155 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
Muslim 52%Protestant 24%Roman Catholic 20%none 3%

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).