Addis Ababa Weather in September

🇪🇹 Ethiopia

20°C

High

10°C

Low

Rain Days

11h

Sunshine

82%

Humidity

Africa › 🇪🇹 Ethiopia › Addis Ababa

Updated: March 2026

Is September a Good Time to Visit Addis Ababa?

5/10

Fair

September is a fair time to visit Addis Ababa (5/10). With 11 daily sunshine hours and only 25 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Addis Ababa. Culture-focused travellers and those who prefer lighter crowds will find September a practical choice, with prices running lower than peak January without sacrificing all the good weather. August offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 25 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.

vs August:19°C avg high

Addis Ababa's September weather is shaped by atmospheric forces that make the data more than just numbers. The 20°C average high reflects a transitional pressure pattern where mid-latitude westerlies alternately bring mild maritime air and cooler polar intrusions. As a result, 11 daily sunshine hours are recorded on average, and rainfall of 270mm is distributed across approximately 25 days because precipitation events tend to be frequent but short-lived.

20°C

Avg High

10°C

Avg Low

25 days

Rain Days

11h

Sunshine

82%

Humidity

Temperature in Addis Ababa in September

The 10°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 82% humidity, the 20°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Winds are calm at an average 11 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 68°F average high, 50°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in September

Monthly Precipitation (mm)

What to Wear in Addis Ababa in September

Morning10°CBefore the day warms up

Afternoon20°CPeak daytime temperature

Evening13°CAfter sunset cools down

Packing for Addis Ababa in September means dressing for 20°C days and 10°C evenings. A light cotton tee with a casual overshirt works well at 20°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 10°C, a modest 10°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 25 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. At 82% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.

💡

Local tip: Addis Ababa sees heavy rain periods where a compact travel umbrella can feel inadequate. A packable waterproof jacket offers better coverage for prolonged downpours and leaves both hands free for maps and cameras.

Events in Addis Ababa in September

September has no major festivals or public holidays in Addis Ababa, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.

What to Pack for Addis Ababa in September

Based on 20°C average highs and 25 rainy days

Light jacket or cardigan for cooler evenings
Mix of short and long-sleeve layers
Comfortable walking shoes with good arch support
Compact folding umbrella
Waterproof outer layer or packable rain jacket
Quick-dry clothing that recovers fast after a shower
Universal travel adapter
Small day pack for city exploration
Reusable water bottle

Best Activities in Addis Ababa in September

Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 20°C, the temperature is ideal for extended walking without overheating
Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
Day trip to the surrounding countryside or coastFull day (depart by 8am)September is reliably dry enough for rural day trips without weather risk
Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 25 rain days expected, having a full-day indoor plan is practical insurance
Cooking class focused on regional cuisineHalf-day sessions run 10am-1pm or 3-6pmIndoor activity that fills a rainy half-day with genuine cultural content
Visit covered historical sites: cathedral, palace, or bazaarAny time; most crowded middayRoofed monuments and covered markets provide exploration without weather exposure
Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningSeptember brings distinct seasonal changes to public green spaces worth exploring
Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmSeptember seasonal produce is at peak availability, offering dishes not found at other times of year

Why is Addis Ababa mild in September?

Addis Ababa's September climate is governed by the Inter-Tropical Convergence Zone (ITCZ), which draws moisture-laden trade winds across the region, producing the characteristic wet season rainfall of warm tropical cities. Daytime heat peaks around 20°C, moderated slightly by afternoon convective showers. Overnight temperatures remain warm at 10°C because the humid air retains heat effectively. Climate data: Open-Meteo ERA5 (1991–2020).

Sunshine Hours

The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.

UV Index

A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.

Rain Days

A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.

Humidity

Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.

Frequently Asked Questions: Addis Ababa in September

In September, Addis Ababa experiences average highs of 20°C (68°F) and lows of 10°C (50°F). Expect around 25 rainy days and 11 hours of sunshine per day, with humidity averaging 82%. The 10°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an extra jacket is essential for evenings. UV index averages 6, so sun protection is advisable on clear days.

Addis Ababa typically sees 25 rainy days in September, with total precipitation of around 270mm. This is a notably wet period. A waterproof jacket or compact umbrella is essential, and it is worth building indoor alternatives into your daily itinerary for the inevitable rainy stretches. For context, the driest month in Addis Ababa typically sees 4-6 fewer rain days than September.

Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Addis Ababa in September. Daytime temperatures of 20°C are pleasant, but the evening drop to 10°C means a jacket is essential if you plan to be out after dark. With 25 rainy days, bring a compact umbrella or waterproof jacket for unexpected showers. Comfortable walking shoes are a priority given the amount of ground most visitors cover.

September is a reasonable time to visit Addis Ababa. Expect 25 rainy days, so pack a light rain layer for flexibility. Average temperatures of 20°C make outdoor exploration comfortable during the dry periods. With 11 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.

The average high temperature in Addis Ababa in September is 20°C (68°F), and the average low is 10°C (50°F). The mean daily temperature is approximately 15°C (59°F). The day-to-night range of 10°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.

The best month to visit Addis Ababa is generally January. January offers the most sunshine at 11 hours per day and only 3 rainy days. Average temperatures reach 22°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around January gives you the best chance of dry, bright weather.

September is shoulder or low season in Addis Ababa, meaning fewer tourists and generally lower prices than peak months. With 11 sunshine hours and 25 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.

In September, Addis Ababa suits a range of activities thanks to mild temperatures around 20°C. With frequent rain, indoor activities and covered attractions are a smart choice. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 11 hours of sunshine, parks and waterfront walks are particularly enjoyable.

September ranks 6th sunniest of the year in Addis Ababa, with an average 11 daily sunshine hours. The driest months are December, November, and January. February is the hottest month (23°C avg high); July is the coolest (19°C). From here, temperatures fall 0°C into October. Compared to last month (August: 19°C high, 31 rain days), September is warmer and drier. September sits in the middle of the annual sunshine ranking for Addis Ababa, offering a reasonable balance of good weather and manageable crowds.

Year-Round Climate

Month	High	Low	Rain Days	Sun	Details
January	22°C	9°C	3	11h	View
February	23°C	10°C	5	11h	View
March	23°C	11°C	10	11h	View
April	23°C	11°C	14	11h	View
May	23°C	11°C	14	11h	View
June	21°C	11°C	23	10h	View
July	19°C	11°C	31	9h	View
August	19°C	11°C	31	10h	View
September	20°C	10°C	25	11h	View
October	20°C	8°C	7	11h	View
November	21°C	8°C	2	11h	View
December	21°C	8°C	1	11h	View

Other Months in Addis Ababa

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Plan Your Trip to Addis Ababa

Best Time to Visit Addis Ababa

Data Sources for Addis Ababa

Addis Ababa on Wikipedia Open-Meteo Climate API NOAA National Centers UK Met Office WMO GeoNames

Climate normals represent 30-year averages (1991-2020). Individual years may vary.