Mile 91 weather in January

In January, Mile 91 sees average daytime highs of 33°C and overnight lows near 22°C, with 10 mm of rain across 2.8 wet days and about 11.6 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 33°C in the first days to 34°C by the end. The sky is clear or mostly clear about 58% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 30 min at the start of January to 11 h 36 min by month's end. Set against the rest of the year, January is Mile 91's 1st-clearest and 8th-windiest month. For the whole year in context, see Mile 91's year-round climate.

Daytime high
33°
4th warmest
Overnight low
22°
2nd coldest
Rainfall
10 mm
2.8 wet days
Daylight
11 h 36 min
7:11 AM – 6:45 PM
Cloud cover
38%
1st clearest
Wind
5 km/h
8th windiest
Solar energy
5.4 kWh/m²
Travel score
4.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 33°C in the first days to 34°C by the end.

A typical January day in Mile 91 reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, January runs about 2°C warmer than December and about 2°C cooler than February.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13322
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123322
133322
143322
153322
163322
173322
183422
193422
203422
213422
223422
233422
243422
253422
263423
273423
283423
293423
303423
313423

How January really feels in Mile 91

Once humidity and wind are folded in, January 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 January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Mile 91 weather by month

How January compares with the rest of the year at a glance. January is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°102.811.64.0
Feb35° / 23°112.311.73.0
Mar35° / 24°337.611.92.6
Apr34° / 24°7613.512.22.8
May31° / 24°21225.512.42.7
Jun29° / 23°32128.512.52.8
Jul28° / 23°43229.812.43.1
Aug28° / 22°50729.712.33.3
Sep29° / 23°40329.2122.9
Oct30° / 23°22628.811.82.9
Nov30° / 22°8718.311.63.8
Dec32° / 22°19511.54.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 25%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27228
37228
47327
57228
67228
77228
87228
97228
107228
117228
127129
137228
147228
157228
167228
177327
187327
197426
207525
217525
227624
237723
247822
257921
267921
278020
288020
298020
308020
318020

Chance of precipitation in January

Any precipitation

Mile 91 gets around 10 mm of rain over 2.8 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
28
38
48
58
68
78
89
99
109
119
129
1310
1410
1510
1610
1710
1810
1910
2010
2110
2210
2310
2410
2510
2610
2710
289
299
309
319

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
13494342
23494440
33494538
43494637
534104835
634104934
734105033
834105033
93495232
103495232
113495232
123395332
133395332
143395332
1523105332
1623105332
1723105332
1823105332
1923115133
2022115233
2122125133
2222125133
2322125133
2422135033
2522135033
2622135033
2722135033
2822135033
2922135132
3012135232
3112135232

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 6 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
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 30 min at the start of January to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 7:07 AM to 7:13 AM, and sunset from 6:37 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:076:37
211.57:076:38
311.57:076:38
411.57:086:39
511.57:086:39
611.57:086:40
711.57:096:40
811.57:096:41
911.57:096:41
1011.57:106:42
1111.57:106:42
1211.57:106:43
1311.57:116:43
1411.57:116:44
1511.67:116:44
1611.67:116:45
1711.67:126:45
1811.67:126:46
1911.67:126:46
2011.67:126:47
2111.67:126:47
2211.67:136:48
2311.67:136:48
2411.67:136:48
2511.67:136:49
2611.67:136:49
2711.67:136:50
2811.67:136:50
2911.67:136:50
3011.67:136:51
3111.67:136:51

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.4 kWh/m².

For context, solar energy here swings from a low near 3.25 kWh/m² to a high of 5.77 kWh/m² in February across the year — January's 5.4 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in January

Hazard calendar for Mile 91

In seasonPeak

None of Mile 91's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Mile 91's monsoon runs June–September, when most of the year's rain falls.

Mile 91 sees seasonal dust haze (February–April), heaviest in February.

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

Is January a good time to visit Mile 91?

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

4.0
Sightseeing
2nd-best month of the year
7.4
Beach & pool
1st-best month of the year

January is a reasonable time to visit Mile 91 for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mile 91 in January

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

In January, Mile 91 sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Mile 91 in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Mile 91 peaks around August 20 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 20UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar12Extreme
Apr10Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Mile 91 in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Mile 91 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 Mile 91?

Mile 91 sits at 8.5°N, 12.2°W, 77 m above sea level, in Sierra Leone. The nearest listed city is Njala, 34 km away.

NjalaLunsarMakeniPort LokoBumpeBoWaterlooFreetown

Topography around Mile 91

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mile 91.

Within 3 km, the terrain around Mile 91 has only modest variations in elevation — a maximum elevation change of 31 m around an average of 73 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 438 m; within 80 km, large variations in elevation — a maximum elevation change of 820 m.

The land around Mile 91 is covered by grassland (62%) within 3 km, grassland (58%) and trees (26%) within 16 km, and trees (57%) and grassland (24%) within 80 km.

3 km
31 m
16 km
438 m
80 km
820 m
treesshrubsgrasslandcroplandartificial surfacesmangroves
January weather nearby: Njala 34 km · Lunsar 43 km · Makeni 50 km · Port Loko 71 km · Bumpe 72 km · Bo 77 km · Waterloo 95 km · Freetown 112 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 Mile 91 (8.466°, -12.2146°, elevation 77 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).