Bumpe weather in May

In May, Bumpe sees average daytime highs of 31°C and overnight lows near 23°C, with 256 mm of rain across 27.5 wet days and about 12.4 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of May to 12 h 24 min by month's end. Set against the rest of the year, May is Bumpe's 9th-clearest and 10th-windiest month. For the whole year in context, see Bumpe's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
10th coldest
Rainfall
256 mm
27.5 wet days
Daylight
12 h 24 min
6:33 AM – 6:55 PM
Cloud cover
85%
9th clearest
Wind
4 km/h
10th windiest
Solar energy
4.3 kWh/m²
Travel score
2.7
out of 10

Bumpe is place in Southern Province, Sierra Leone.

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 31°C through the month.

A typical May day in Bumpe reaches about 31°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, May runs about 2°C cooler than April and about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143123
153123
163123
173123
183123
193123
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Bumpe

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
heat index over the day's high
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.

Bumpe weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°194.311.64.4
Feb34° / 23°224.711.73.5
Mar34° / 24°6011.911.93.0
Apr32° / 24°12618.512.22.9
May31° / 23°25627.512.42.7
Jun29° / 23°35429.112.52.8
Jul28° / 22°42929.412.43.2
Aug28° / 22°52229.512.33.3
Sep28° / 22°45929.5123.0
Oct29° / 22°25729.711.82.9
Nov30° / 22°10720.211.63.8
Dec31° / 22°307.411.54.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 7% of May, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11387
21288
31288
41189
51189
61189
71189
8991
9991
10991
11892
12892
13892
14892
15793
16793
17694
18694
19595
20595
21595
22595
23496
24496
25496
26496
27496
28496
29595
30595
31595

Chance of precipitation in May

Any precipitation

Bumpe gets around 256 mm of rain over 27.5 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 89% and peaks near 95% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
177
279
380
481
582
683
784
885
986
1087
1187
1288
1389
1490
1590
1691
1791
1892
1992
2092
2192
2293
2393
2493
2593
2693
2794
2894
2994
3095
3195

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
114653
204555
304555
404555
504654
604654
704654
804654
904753
1004753
1104753
1204852
1304852
1404951
1505050
1605149
1705248
1805347
1905545
2005644
2105842
2205941
2306139
2406337
2506535
2606733
2706931
2807129
2907327
3007525
3107723

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 18 min at the start of May to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 6:37 AM to 6:32 AM, and sunset from 6:53 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:376:53
212.36:366:53
312.36:366:53
412.36:366:53
512.36:356:53
612.36:356:53
712.36:356:53
812.36:356:54
912.36:346:54
1012.36:346:54
1112.36:346:54
1212.36:346:54
1312.36:346:54
1412.36:336:54
1512.46:336:54
1612.46:336:55
1712.46:336:55
1812.46:336:55
1912.46:336:55
2012.46:336:55
2112.46:336:56
2212.46:326:56
2312.46:326:56
2412.46:326:56
2512.46:326:56
2612.46:326:57
2712.46:326:57
2812.46:326:57
2912.46:326:57
3012.46:326:57
3112.46:326:58

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.3 kWh/m².

For context, solar energy here swings from a low near 3.26 kWh/m² to a high of 5.58 kWh/m² in February across the year — May's 4.3 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in May

Hazard calendar for Bumpe

In seasonPeak

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

Bumpe's monsoon runs May–October, when most of the year's rain falls.

Bumpe sees seasonal dust haze (February–April), heaviest in February.

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

Is May a good time to visit Bumpe?

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

2.7
Sightseeing
12th-best month of the year
3.9
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Bumpe.

What to pack for Bumpe in May

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

In May, Bumpe sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

UV index in Bumpe 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 Bumpe peaks around August 21 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 highAug 21UV 13Dec 15UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar12Extreme
Apr10Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov9Very high
Dec8Very high

Air quality in Bumpe 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 Bumpe is worst in April — around 202 µg/m³ PM2.5 (very unhealthy), about 19.4× the cleanest month (August, 10 µg/m³).

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyModerateGoodModeratePoorApr 9200 µg/m³Aug 2011 µg/m³
PM2.5 (µg/m³)Level
Jan70Unhealthy
Feb77Unhealthy
Mar194Very unhealthy
Apr202Very unhealthy
May33Moderate
Jun19Moderate
Jul13Moderate
Aug10Good
Sep11Good
Oct17Moderate
Nov25Moderate
Dec50Poor
Location & terrain

Where is Bumpe?

Bumpe sits at 7.9°N, 11.9°W, 38 m above sea level, in Sierra Leone. The nearest listed city is Bo, 20 km away.

BoNjalaMile 91KenemaSegbwemaMakeniLunsarKoidu

Topography around Bumpe

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

Within 3 km, the terrain around Bumpe has only modest variations in elevation — a maximum elevation change of 49 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 132 m; within 80 km, large variations in elevation — a maximum elevation change of 820 m.

The land around Bumpe is covered by trees (46%) and shrubs (36%) within 3 km, trees (41%), shrubs (38%) and grassland (21%) within 16 km, and trees (57%) and shrubs (20%) within 80 km.

3 km
49 m
16 km
132 m
80 km
820 m
treesshrubsgrasslandartificial surfaceswaterwetlandmangroves
May weather nearby: Bo 20 km · Njala 40 km · Mile 91 72 km · Kenema 79 km · Segbwema 106 km · Makeni 112 km · Lunsar 112 km · Koidu 132 km

Sierra Leone travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 24% of US
price level, 2025
GDP per capita
$846
2025
Happiness
3.3 / 10
World Happiness, 2025
Safe drinking water
11%
of population, 2024
Homicide rate
2.2
per 100k, 2020
Road deaths
33
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Muslim 77%Christian 23%

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 Bumpe (7.8921°, -11.9054°, elevation 38 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).