Climate Insights for Merelani

Arusha Region, Tanzania

Hottest
February
31°C peak
Coldest
July
15°C low
Wettest
April
183mm rain
Best to Visit
January, May, June
Mild temps & low rain

Climate Overview

The climate in Merelani is warm and mild. The average annual temperature is 23°C and approximately 776mm of precipitation falls per year. April is the wettest month, receiving around 183mm of rainfall. Merelani 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: 30° Average: 25° Min: 20° Feb Max: 31° Average: 25° Min: 20° Mar Max: 31° Average: 25° Min: 20° Apr Max: 28° Average: 23° Min: 20° May Max: 26° Average: 21° Min: 18° Jun Max: 24° Average: 20° Min: 16° Jul Max: 24° Average: 19° Min: 15° Aug Max: 26° Average: 20° Min: 16° Sep Max: 28° Average: 22° Min: 17° Oct Max: 29° Average: 23° Min: 18° Nov Max: 30° Average: 24° Min: 19° Dec Max: 30° Average: 24° Min: 20°
Max
Average
Min

Merelani sees moderate temperature variation throughout the year, ranging from 15°C to 31°C. The warmest month is February, when average highs reach 31°C and the mean temperature sits around 25°C. July is the coolest month, with minimum temperatures around 15°C and an average of 19°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Precipitation

0mm 50mm 100mm 150mm 200mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 70mm Feb Precipitation: 53mm Mar Precipitation: 145mm Apr Precipitation: 183mm May Precipitation: 81mm Jun Precipitation: 21mm Jul Precipitation: 19mm Aug Precipitation: 17mm Sep Precipitation: 11mm Oct Precipitation: 32mm Nov Precipitation: 68mm Dec Precipitation: 75mm
Precipitation

Merelani is a relatively dry area, receiving approximately 776mm of precipitation annually, which averages out to around 65mm per month. The wettest month is April, averaging 183mm of rainfall. March and May also tend to see above-average precipitation. The driest month is September, with just 11mm. That's 172mm less than April, 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: 6km/h Jun Wind Speed: 6km/h Jul Wind Speed: 7km/h Aug Wind Speed: 7km/h Sep Wind Speed: 8km/h Oct Wind Speed: 9km/h Nov Wind Speed: 8km/h Dec Wind Speed: 6km/h
Wind Speed

Merelani is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.

Seasons

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

7 days until Spring

It is currently winter in Merelani, which began on June 21, 2026. Merelani 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 31°C, while the coldest stretch bottoms out in July near 15°C. Spring is next, beginning on September 23, 2026 (7 days from now).

Spring

Temperatures range from 17 to 30°C. Rainfall is relatively light, with around 112mm over the season and a monthly average of 37mm. Winds are generally light, averaging 8km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.

Summer

Temperatures range from 20 to 31°C. Precipitation is moderate at around 198mm for the season, averaging 66mm per month. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 18 to 31°C. Rainfall is heavy, totalling around 409mm across the season with a monthly average of 136mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 15 to 26°C. Rainfall is relatively light, with around 57mm over the season and a monthly average of 19mm. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 25°
Feb 25°
Mar 25°
Apr 23°
May 21°
Jun 20°
Jul 19°
Aug 20°
Sep 22°
Oct 23°
Nov 24°
Dec 24°

The best time to visit Merelani is during January, May, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 44mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 31°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Merelani 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
20 °C
30 °C
5 km/h
70 mm
0 cm
Feb
20 °C
31 °C
6 km/h
53 mm
0 cm
Mar
20 °C
31 °C
6 km/h
145 mm
0 cm
Apr
20 °C
28 °C
6 km/h
183 mm
0 cm
May
18 °C
26 °C
6 km/h
81 mm
0 cm
Jun
16 °C
24 °C
6 km/h
21 mm
0 cm
Jul
15 °C
24 °C
7 km/h
19 mm
0 cm
Aug
16 °C
26 °C
7 km/h
17 mm
0 cm
Sep Current
17 °C
28 °C
8 km/h
11 mm
0 cm
Oct
18 °C
29 °C
9 km/h
32 mm
0 cm
Nov
19 °C
30 °C
8 km/h
68 mm
0 cm
Dec
20 °C
30 °C
6 km/h
75 mm
0 cm
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Metric (°C, km/h)