Bo weather in June

In June, Bo sees average daytime highs of 29°C and overnight lows near 23°C, with 333 mm of rain across 28.9 wet days and about 12.5 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 0% of the time in June, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of June to 12 h 30 min by month's end. Set against the rest of the year, June is Bo's 8th-clearest and 8th-windiest month. For the whole year in context, see Bo's year-round climate.

Daytime high
29°
8th warmest
Overnight low
23°
8th coldest
Rainfall
333 mm
28.9 wet days
Daylight
12 h 30 min
6:33 AM – 7:01 PM
Cloud cover
84%
8th clearest
Wind
5 km/h
8th windiest
Solar energy
3.96 kWh/m²
Travel score
2.8
out of 10

Bo is city of Sierra Leone.

Density
655/km²
people per km²
Founded
1787

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical June day in Bo reaches about 29°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 27°C and 31°C. Set against its neighbours, June runs about 1°C cooler than May and about 1°C warmer than July.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272922
282922
292922
302922

How June really feels in Bo

Once humidity and wind are folded in, June averages 26 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
26
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Bo weather by month

How June compares with the rest of the year at a glance. June is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°173.711.64.1
Feb35° / 23°204.711.73.1
Mar34° / 24°5611.411.92.8
Apr33° / 24°12018.112.22.9
May31° / 23°2462712.42.7
Jun29° / 23°33328.912.52.8
Jul28° / 22°39629.112.43.3
Aug28° / 22°47629.412.33.4
Sep28° / 22°43329.3123.0
Oct29° / 22°24529.211.82.9
Nov30° / 22°10319.311.63.9
Dec31° / 22°266.411.55.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 6% of June, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3595
4694
5694
6694
7694
8793
9793
10793
11793
12793
13793
14793
15793
16793
17793
18793
19793
20793
21694
22694
23694
24694
25694
26595
27595
28595
29595
30595

Chance of precipitation in June

Any precipitation

Bo gets around 333 mm of rain over 28.9 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 96% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
195
295
396
496
596
696
796
896
996
1096
1196
1296
1396
1496
1596
1696
1796
1896
1996
2096
2196
2296
2396
2496
2597
2697
2797
2897
2997
3097

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the oppressive band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
108614
208812
308911
409010
50919
60928
70937
80937
90946
100946
110955
120955
130964
140964
150964
160973
170973
180973
190982
200982
210982
220982
230991
240991
251981
261981
271981
281981
291981
301990

Wind in June

Winds average 5 km/h in June.

Across June, 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.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 12 h 24 min at the start of June to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 6:32 AM to 6:36 AM, and sunset from 6:57 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:326:57
212.46:326:58
312.46:326:58
412.46:326:58
512.46:326:58
612.46:326:59
712.46:326:59
812.46:326:59
912.46:326:59
1012.56:327:00
1112.56:337:00
1212.56:337:00
1312.56:337:00
1412.56:337:01
1512.56:337:01
1612.56:337:01
1712.56:347:01
1812.56:347:01
1912.56:347:02
2012.56:347:02
2112.56:347:02
2212.56:357:02
2312.56:357:03
2412.56:357:03
2512.56:357:03
2612.56:357:03
2712.56:367:03
2812.56:367:04
2912.56:367:04
3012.56:367:04

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 3.96 kWh/m².

For context, solar energy here swings from a low near 3.29 kWh/m² to a high of 5.6 kWh/m² in February across the year — June's 3.96 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.0Bright
74.0Bright
84.0Bright
94.0Bright
104.0Bright
114.0Bright
124.0Bright
134.0Moderate
144.0Moderate
154.0Moderate
164.0Moderate
174.0Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.8Moderate
Planning a trip in June

Hazard calendar for Bo

In seasonPeak

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

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

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

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

Is June a good time to visit Bo?

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

2.8
Sightseeing
10th-best month of the year
3.7
Beach & pool
9th-best month of the year

June is a weaker month for outdoor sightseeing in Bo.

What to pack for Bo in June

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

In June, Bo sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

UV index in Bo in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Bo peaks around August 22 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highAug 22UV 13Dec 15UV 8
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar12Extreme
Apr10Very high
May12Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov9Very high
Dec8Very high

Air quality in Bo in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.

Air quality in Bo 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 Bo?

Bo sits at 8.0°N, 11.7°W, 104 m above sea level, in Sierra Leone. The nearest listed city is Bumpe, 20 km away.

BumpeNjalaKenemaMile 91SegbwemaMakeniKoiduLunsar

Topography around Bo

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

Within 3 km, the terrain around Bo has only modest variations in elevation — a maximum elevation change of 93 m around an average of 93 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 328 m; within 80 km, large variations in elevation — a maximum elevation change of 820 m.

The land around Bo is covered by artificial surfaces (56%) and trees (22%) within 3 km, trees (51%) and shrubs (35%) within 16 km, and trees (63%) and shrubs (20%) within 80 km.

3 km
93 m
16 km
328 m
80 km
820 m
treesshrubsgrasslandartificial surfaceswaterwetlandmangroves
June weather nearby: Bumpe 20 km · Njala 43 km · Kenema 61 km · Mile 91 77 km · Segbwema 87 km · Makeni 108 km · Koidu 113 km · Lunsar 119 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 Bo (7.9647°, -11.7383°, elevation 104 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).