Boulsa weather in May

In May, Boulsa sees average daytime highs of 38°C and overnight lows near 28°C, with 17 mm of rain across 5.3 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 39°C in the first days to 37°C by the end. The sky is clear or mostly clear about 38% of the time in May, and the air most often feels muggy.

Daylight stretches from about 12 h 24 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Boulsa's 9th-clearest and 4th-windiest month. For the whole year in context, see Boulsa's year-round climate.

Daytime high
38°
2nd warmest
Overnight low
28°
12th coldest
Rainfall
17 mm
5.3 wet days
Daylight
12 h 36 min
5:41 AM – 6:16 PM
Cloud cover
54%
9th clearest
Wind
10 km/h
4th windiest
Solar energy
6.64 kWh/m²
Travel score
1.1
out of 10

Boulsa is village in Burkina Faso.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 39°C in the first days to 37°C by the end.

A typical May day in Boulsa reaches about 38°C in the afternoon and slips back to 28°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 35°C and 41°C. Set against its neighbours, May runs about 1°C cooler than April and about 3°C warmer than June.

20°25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
13928
23928
33928
43928
53928
63928
73928
83928
93928
103928
113928
123828
133828
143828
153828
163828
173828
183828
193828
203828
213828
223828
233828
243728
253728
263727
273727
283727
293727
303727
313727

How May really feels in Boulsa

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.

Boulsa weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 18°0011.35.6
Feb35° / 21°00.111.63.5
Mar38° / 24°10.411.91.2
Apr39° / 27°71.812.30.4
May38° / 28°175.312.61.1
Jun35° / 26°418.512.72.6
Jul32° / 24°9715.512.73.3
Aug31° / 24°17019.812.43.4
Sep32° / 24°8912.912.13.5
Oct35° / 24°194.811.72.7
Nov35° / 21°00.111.43.0
Dec33° / 18°0011.35.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35743
45743
55743
65644
75743
85743
95743
105644
115644
125743
135842
145842
155842
165842
175842
185941
196040
206040
216040
226040
236040
246040
256040
266040
276040
286040
296040
306040
316040

Chance of precipitation in May

Any precipitation

Boulsa gets around 17 mm of rain over 5.3 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 17% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
19
29
310
410
511
611
712
812
913
1013
1114
1214
1315
1415
1516
1617
1718
1818
1919
2020
2121
2222
2322
2423
2524
2624
2725
2825
2926
3026
3127

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 78% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1121126456
2111125477
3101024497
491023508
57922539
668215510
758205611
847195911
946195912
1036186013
1125186114
1225176115
1314176315
1413176316
1513176217
1612166318
1712166219
1801156320
1901156222
2001146223
2101146124
2200136126
2300126127
2400116029
2500115831
2600105832
270095734
280085735
290075637
300065539
310055540

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 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 18 minutes over May. Sunrise moves from 5:46 AM to 5:39 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)
112.45:466:13
212.55:466:13
312.55:456:13
412.55:456:13
512.55:456:14
612.55:446:14
712.55:446:14
812.55:436:14
912.55:436:14
1012.55:436:15
1112.55:426:15
1212.55:426:15
1312.65:426:15
1412.65:426:16
1512.65:416:16
1612.65:416:16
1712.65:416:16
1812.65:416:17
1912.65:406:17
2012.65:406:17
2112.65:406:17
2212.65:406:18
2312.65:406:18
2412.65:406:18
2512.65:406:18
2612.75:396:19
2712.75:396:19
2812.75:396:19
2912.75:396:20
3012.75:396:20
3112.75:396:20

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.64 kWh/m².

For context, solar energy here swings from a low near 5.36 kWh/m² to a high of 6.79 kWh/m² in March across the year — May's 6.64 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in May

Hazard calendar for Boulsa

In seasonPeak

In May, Boulsa sits inside its dust season. The full year is below, with each hazard's peak months called out.

Boulsa sees seasonal dust haze (February–July), heaviest in March.

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

Is May a good time to visit Boulsa?

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

1.1
Sightseeing
11th-best month of the year
4.0
Beach & pool
11th-best month of the year

May is a weaker month for outdoor sightseeing in Boulsa.

What to pack for Boulsa in May

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

In May, Boulsa sees daytime highs around 38°C and nights near 28°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Boulsa in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Boulsa peaks around March 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 14UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar14Extreme
Apr10Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Boulsa 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 Boulsa is worst in February — around 77 µg/m³ PM2.5 (unhealthy), about 5.0× the cleanest month (August, 15 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorFeb 2277 µg/m³Aug 1416 µg/m³
PM2.5 (µg/m³)Level
Jan65Unhealthy
Feb77Unhealthy
Mar77Unhealthy
Apr58Unhealthy
May34Moderate
Jun27Moderate
Jul18Moderate
Aug15Moderate
Sep20Moderate
Oct33Moderate
Nov40Poor
Dec54Poor
Location & terrain

Where is Boulsa?

Boulsa sits at 12.7°N, 0.6°W, 313 m above sea level, in Burkina Faso. The nearest listed city is Yalgo, 42 km away.

PouytengaMogtédoKorsimoroBogandéKoupéla

Topography around Boulsa

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Boulsa.

Within 3 km, the terrain around Boulsa has only modest variations in elevation — a maximum elevation change of 50 m around an average of 317 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, only modest variations in elevation — a maximum elevation change of 247 m.

The land around Boulsa is covered by grassland (51%) and cropland (28%) within 3 km, grassland (49%) and cropland (31%) within 16 km, and grassland (54%) and cropland (33%) within 80 km.

3 km
50 m
16 km
87 m
80 km
247 m
shrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Yalgo 42 km · Barogo 44 km · Zorgo 47 km · Pouytenga 49 km · Mogtédo 51 km · Korsimoro 56 km · Bogandé 58 km · Koupéla 59 km

Burkina Faso travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$1,148
2025
Happiness
4.5 / 10
World Happiness, 2025
Homicide rate
1.3
per 100k, 2017
Road deaths
31
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Muslim 64%Roman Catholic 20%Animiste 9%Protestant 6%

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 Boulsa (12.6666°, -0.5747°, elevation 313 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).