Climate Insights for Kasulu

Kasulu Town, Kigoma Region, Tanzania

Hottest
September
31°C peak
Coldest
July
16°C low
Wettest
December
264mm rain
Best to Visit
May, June, July
Mild temps & low rain

Climate Overview

The climate in Kasulu is warm and mild. The average annual temperature is 22°C and approximately 1497mm of precipitation falls per year. December is the wettest month, receiving around 264mm of rainfall. Kasulu sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 26° Average: 22° Min: 18° Feb Max: 27° Average: 22° Min: 18° Mar Max: 27° Average: 22° Min: 18° Apr Max: 26° Average: 22° Min: 18° May Max: 27° Average: 22° Min: 18° Jun Max: 28° Average: 22° Min: 16° Jul Max: 28° Average: 22° Min: 16° Aug Max: 30° Average: 23° Min: 17° Sep Max: 31° Average: 24° Min: 19° Oct Max: 29° Average: 23° Min: 19° Nov Max: 27° Average: 22° Min: 18° Dec Max: 26° Average: 21° Min: 18°
Max
Average
Min

Kasulu sees moderate temperature variation throughout the year, ranging from 16°C to 31°C. The warmest month is September, when average highs reach 31°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 16°C and an average of 22°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 234mm Feb Precipitation: 186mm Mar Precipitation: 204mm Apr Precipitation: 219mm May Precipitation: 45mm Jun Precipitation: 4mm Jul Precipitation: 2mm Aug Precipitation: 10mm Sep Precipitation: 18mm Oct Precipitation: 116mm Nov Precipitation: 195mm Dec Precipitation: 264mm
Precipitation

Kasulu is a fairly wet location, receiving approximately 1497mm of precipitation annually, which averages out to around 125mm per month. The wettest month is December, averaging 264mm of rainfall. January and April also tend to see above-average precipitation. The driest month is July, with just 2mm. That's 262mm less than December, 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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 1km/h Feb Wind Speed: 1km/h Mar Wind Speed: 1km/h Apr Wind Speed: 1km/h May Wind Speed: 2km/h Jun Wind Speed: 2km/h Jul Wind Speed: 2km/h Aug Wind Speed: 2km/h Sep Wind Speed: 2km/h Oct Wind Speed: 2km/h Nov Wind Speed: 1km/h Dec Wind Speed: 1km/h
Wind Speed

Kasulu is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

Seasons

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

91 days until Spring

It is currently winter in Kasulu, which began on June 21, 2026. Kasulu sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 31°C, while the coldest stretch bottoms out in July near 16°C. Spring is next, beginning on September 23, 2026 — 91 days from now.

Spring

Temperatures range from 18 to 31°C. Rainfall is heavy, totalling around 329mm across the season with a monthly average of 110mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 18 to 27°C. Rainfall is heavy, totalling around 683mm across the season with a monthly average of 228mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 18 to 27°C. Rainfall is heavy, totalling around 469mm across the season with a monthly average of 156mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 16 to 30°C. Precipitation is minimal, with only around 15mm for the entire season. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 22°
Feb 22°
Mar 22°
Apr 22°
May 22°
Jun 22°
Jul 22°
Aug 23°
Sep 24°
Oct 23°
Nov 22°
Dec 21°

The best time to visit Kasulu is during May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 16mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Kasulu 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
18 °C
26 °C
1 km/h
234 mm
0 cm
Feb
18 °C
27 °C
1 km/h
186 mm
0 cm
Mar
18 °C
27 °C
1 km/h
204 mm
0 cm
Apr
18 °C
26 °C
1 km/h
219 mm
0 cm
May
18 °C
27 °C
2 km/h
45 mm
0 cm
Jun Current
16 °C
28 °C
2 km/h
4 mm
0 cm
Jul
16 °C
28 °C
2 km/h
2 mm
0 cm
Aug
17 °C
30 °C
2 km/h
10 mm
0 cm
Sep
19 °C
31 °C
2 km/h
18 mm
0 cm
Oct
19 °C
29 °C
2 km/h
116 mm
0 cm
Nov
18 °C
27 °C
1 km/h
195 mm
0 cm
Dec
18 °C
26 °C
1 km/h
264 mm
0 cm
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