Climate Insights for Usa River

Meru, Arusha Region, Tanzania

Hottest
February
27°C peak
Coldest
July
12°C low
Wettest
March
217mm rain
Best to Visit
May, June, July
Mild temps & low rain

Climate Overview

The climate in Usa River is warm and mild. The average annual temperature is 19°C and approximately 1176mm of precipitation falls per year. March is the wettest month, receiving around 217mm of rainfall. Usa River sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 26° Average: 21° Min: 16° Feb Max: 27° Average: 21° Min: 15° Mar Max: 27° Average: 22° Min: 17° Apr Max: 25° Average: 20° Min: 17° May Max: 23° Average: 19° Min: 15° Jun Max: 22° Average: 17° Min: 13° Jul Max: 22° Average: 17° Min: 12° Aug Max: 23° Average: 18° Min: 13° Sep Max: 25° Average: 19° Min: 13° Oct Max: 26° Average: 20° Min: 15° Nov Max: 25° Average: 20° Min: 16° Dec Max: 25° Average: 20° Min: 15°
Max
Average
Min

Usa River sees moderate temperature variation throughout the year, ranging from 12°C to 27°C. The warmest month is February, when average highs reach 27°C and the mean temperature sits around 21°C. July is the coolest month, with minimum temperatures around 12°C and an average of 17°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 152mm Feb Precipitation: 101mm Mar Precipitation: 217mm Apr Precipitation: 211mm May Precipitation: 67mm Jun Precipitation: 8mm Jul Precipitation: 7mm Aug Precipitation: 8mm Sep Precipitation: 8mm Oct Precipitation: 72mm Nov Precipitation: 169mm Dec Precipitation: 157mm
Precipitation

Usa River is a moderately rainy area, receiving approximately 1176mm of precipitation annually, which averages out to around 98mm per month. The wettest month is March, averaging 217mm of rainfall. April and November also tend to see above-average precipitation. The driest month is July, with just 7mm. That's 210mm less than March, 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: 2km/h Feb Wind Speed: 2km/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

Usa River 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 July, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, 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

93 days until Spring

It is currently winter in Usa River, which began on June 21, 2026. Usa River 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 27°C, while the coldest stretch bottoms out in July near 12°C. Spring is next, beginning on September 23, 2026 — 93 days from now.

Spring

Temperatures range from 13 to 26°C. Precipitation is moderate at around 248mm for the season, averaging 83mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 15 to 27°C. Rainfall is heavy, totalling around 410mm across the season with a monthly average of 137mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 15 to 27°C. Rainfall is heavy, totalling around 495mm across the season with a monthly average of 165mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 12 to 23°C. Precipitation is minimal, with only around 23mm 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 21°
Feb 21°
Mar 22°
Apr 20°
May 19°
Jun 17°
Jul 17°
Aug 18°
Sep 19°
Oct 20°
Nov 20°
Dec 20°

The best time to visit Usa River is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 28mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 27°C. 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 Usa River 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
16 °C
26 °C
2 km/h
152 mm
0 cm
Feb
15 °C
27 °C
2 km/h
101 mm
0 cm
Mar
17 °C
27 °C
1 km/h
217 mm
0 cm
Apr
17 °C
25 °C
1 km/h
211 mm
0 cm
May
15 °C
23 °C
2 km/h
67 mm
0 cm
Jun Current
13 °C
22 °C
2 km/h
8 mm
0 cm
Jul
12 °C
22 °C
2 km/h
7 mm
0 cm
Aug
13 °C
23 °C
2 km/h
8 mm
0 cm
Sep
13 °C
25 °C
2 km/h
8 mm
0 cm
Oct
15 °C
26 °C
2 km/h
72 mm
0 cm
Nov
16 °C
25 °C
1 km/h
169 mm
0 cm
Dec
15 °C
25 °C
1 km/h
157 mm
0 cm
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