Climate Insights for Njala

Southern Province, Sierra Leone

Hottest
February
37°C peak
Coldest
December
22°C low
Wettest
August
607mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Njala is hot. The average annual temperature is 27°C and approximately 2635mm of precipitation falls per year. August is the wettest month, receiving around 607mm of rainfall. Njala sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

0° 10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 35° Average: 28° Min: 23° Feb Max: 37° Average: 29° Min: 24° Mar Max: 36° Average: 29° Min: 24° Apr Max: 34° Average: 28° Min: 25° May Max: 32° Average: 27° Min: 24° Jun Max: 30° Average: 26° Min: 23° Jul Max: 28° Average: 25° Min: 23° Aug Max: 28° Average: 25° Min: 23° Sep Max: 29° Average: 25° Min: 23° Oct Max: 30° Average: 26° Min: 23° Nov Max: 31° Average: 26° Min: 23° Dec Max: 32° Average: 27° Min: 22°
Max
Average
Min

Njala sees moderate temperature variation throughout the year, ranging from 22°C to 37°C. February is the hottest month, with daytime highs reaching 37°C and an average of 29°C. December is the coolest month, with minimum temperatures around 22°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm 550mm 600mm 650mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 6mm Feb Precipitation: 14mm Mar Precipitation: 35mm Apr Precipitation: 87mm May Precipitation: 198mm Jun Precipitation: 326mm Jul Precipitation: 459mm Aug Precipitation: 607mm Sep Precipitation: 540mm Oct Precipitation: 242mm Nov Precipitation: 102mm Dec Precipitation: 19mm
Precipitation

Njala is a very wet location, receiving approximately 2635mm of precipitation annually, which averages out to around 220mm per month. The wettest month is August, averaging 607mm of rainfall. September and July also tend to see above-average precipitation. The driest month is January, with just 6mm. That's 601mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h 5km/h 10km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 5km/h Feb Wind Speed: 6km/h Mar Wind Speed: 6km/h Apr Wind Speed: 6km/h May Wind Speed: 5km/h Jun Wind Speed: 5km/h Jul Wind Speed: 6km/h Aug Wind Speed: 6km/h Sep Wind Speed: 5km/h Oct Wind Speed: 4km/h Nov Wind Speed: 4km/h Dec Wind Speed: 4km/h
Wind Speed

Njala is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

87 days until Winter

It is currently autumn in Njala, which began on September 23, 2026. Njala sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in February at around 37°C, while the coldest stretch bottoms out in December near 22°C. Winter is next, beginning on December 21, 2026 (87 days from now).

Spring

Temperatures range from 24 to 36°C. Rainfall is heavy, totalling around 320mm across the season with a monthly average of 107mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 1392mm across the season with a monthly average of 464mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 883mm across the season with a monthly average of 294mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 22 to 37°C. Precipitation is minimal, with only around 39mm for the entire season. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for Njala based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
23 °C
35 °C
5 km/h
6 mm
0 cm
Feb
24 °C
37 °C
6 km/h
14 mm
0 cm
Mar
24 °C
36 °C
6 km/h
35 mm
0 cm
Apr
25 °C
34 °C
6 km/h
87 mm
0 cm
May
24 °C
32 °C
5 km/h
198 mm
0 cm
Jun
23 °C
30 °C
5 km/h
326 mm
0 cm
Jul
23 °C
28 °C
6 km/h
459 mm
0 cm
Aug
23 °C
28 °C
6 km/h
607 mm
0 cm
Sep Current
23 °C
29 °C
5 km/h
540 mm
0 cm
Oct
23 °C
30 °C
4 km/h
242 mm
0 cm
Nov
23 °C
31 °C
4 km/h
102 mm
0 cm
Dec
22 °C
32 °C
4 km/h
19 mm
0 cm
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Metric (°C, km/h)