Climate Insights for Deder

Oromiya Region, Ethiopia

Hottest
March
26°C peak
Coldest
December
12°C low
Wettest
May
243mm rain
Best to Visit
January, February, March
Mild temps & low rain

Climate Overview

The climate in Deder is warm and mild. The average annual temperature is 19°C and approximately 1062mm of precipitation falls per year. May is the wettest month, receiving around 243mm of rainfall. Deder 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: 24° Average: 18° Min: 12° Feb Max: 26° Average: 20° Min: 14° Mar Max: 26° Average: 21° Min: 16° Apr Max: 25° Average: 20° Min: 16° May Max: 25° Average: 20° Min: 16° Jun Max: 25° Average: 20° Min: 15° Jul Max: 23° Average: 18° Min: 15° Aug Max: 22° Average: 18° Min: 15° Sep Max: 23° Average: 19° Min: 15° Oct Max: 24° Average: 19° Min: 14° Nov Max: 23° Average: 18° Min: 13° Dec Max: 23° Average: 17° Min: 12°
Max
Average
Min

Deder sees moderate temperature variation throughout the year, ranging from 12°C to 26°C. The warmest month is March, when average highs reach 26°C and the mean temperature sits around 21°C. December 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: 8mm Feb Precipitation: 14mm Mar Precipitation: 74mm Apr Precipitation: 175mm May Precipitation: 243mm Jun Precipitation: 65mm Jul Precipitation: 107mm Aug Precipitation: 120mm Sep Precipitation: 99mm Oct Precipitation: 109mm Nov Precipitation: 41mm Dec Precipitation: 8mm
Precipitation

Deder is a moderately rainy area, receiving approximately 1062mm of precipitation annually, which averages out to around 89mm per month. The wettest month is May, averaging 243mm of rainfall. April and August also tend to see above-average precipitation. The driest month is January, with just 8mm. That's 235mm less than May, 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: 6km/h Feb Wind Speed: 6km/h Mar Wind Speed: 6km/h Apr Wind Speed: 5km/h May Wind Speed: 5km/h Jun Wind Speed: 7km/h Jul Wind Speed: 8km/h Aug Wind Speed: 7km/h Sep Wind Speed: 6km/h Oct Wind Speed: 4km/h Nov Wind Speed: 5km/h Dec Wind Speed: 5km/h
Wind Speed

Deder is relatively calm, with an average annual wind speed of 6km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, 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 4km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 5km/h in winter, 5km/h in spring, 7km/h in summer, 5km/h in autumn.

Seasons

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

10 days until Autumn

It is currently summer in Deder, which began on June 21, 2026. Deder sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in March at around 26°C, while the coldest stretch bottoms out in December near 12°C. Autumn is next, beginning on September 23, 2026 (10 days from now).

Spring

Temperatures range from 16 to 26°C. Rainfall is heavy, totalling around 492mm across the season with a monthly average of 164mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 15 to 25°C. Precipitation is moderate at around 292mm for the season, averaging 97mm per month. Winds are generally light, averaging 7km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from 13 to 24°C. Precipitation is moderate at around 248mm for the season, averaging 83mm per month. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 12 to 26°C. Precipitation is minimal, with only around 30mm 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.

Best Time to Visit

Jan 18°
Feb 20°
Mar 21°
Apr 20°
May 20°
Jun 20°
Jul 18°
Aug 18°
Sep 19°
Oct 19°
Nov 18°
Dec 17°

The best time to visit Deder is during January, February, March, June, September, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 44mm per month. 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 Deder 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
12 °C
24 °C
6 km/h
8 mm
0 cm
Feb
14 °C
26 °C
6 km/h
14 mm
0 cm
Mar
16 °C
26 °C
6 km/h
74 mm
0 cm
Apr
16 °C
25 °C
5 km/h
175 mm
0 cm
May
16 °C
25 °C
5 km/h
243 mm
0 cm
Jun
15 °C
25 °C
7 km/h
65 mm
0 cm
Jul
15 °C
23 °C
8 km/h
107 mm
0 cm
Aug
15 °C
22 °C
7 km/h
120 mm
0 cm
Sep Current
15 °C
23 °C
6 km/h
99 mm
0 cm
Oct
14 °C
24 °C
4 km/h
109 mm
0 cm
Nov
13 °C
23 °C
5 km/h
41 mm
0 cm
Dec
12 °C
23 °C
5 km/h
8 mm
0 cm
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Metric (°C, km/h)