Hīrna weather in September

In September, Hīrna sees average daytime highs of 26°C and overnight lows near 17°C, with 66 mm of rain across 13.4 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Hīrna's 5th-clearest and 4th-windiest month. For the whole year in context, see Hīrna's year-round climate.

Daytime high
26°
8th warmest
Overnight low
17°
9th coldest
Rainfall
66 mm
13.4 wet days
Daylight
12 h 06 min
6:08 AM – 6:11 PM
Cloud cover
46%
5th clearest
Wind
7 km/h
4th windiest
Solar energy
5.88 kWh/m²
Travel score
6.3
out of 10

Hīrna is town in Northeastern Ethiopia.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in Hīrna reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, September runs on par with August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12617
22617
32617
42617
52617
62617
72617
82617
92617
102617
112617
122617
132617
142617
152617
162617
172617
182617
192617
202617
212617
222617
232617
242617
252617
262617
272617
282617
292617
302617

Hīrna weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 14°163.811.58.2
Feb27° / 15°223.511.77.7
Mar28° / 17°7910.111.96.6
Apr27° / 17°13115.812.25.6
May27° / 17°13919.712.45.1
Jun27° / 17°7015.312.55.8
Jul26° / 17°11820.712.55.3
Aug26° / 17°11819.412.35.6
Sep26° / 17°6613.412.16.3
Oct26° / 16°8511.111.86.7
Nov25° / 14°385.311.67.9
Dec25° / 13°173.111.58.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 34% of September, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38218
48218
58218
68218
78218
88218
98119
108119
118119
128119
138020
147921
157921
167921
177921
187822
197723
207723
217723
227624
237525
247426
257327
267228
277129
287030
296931
306733

Chance of precipitation in September

Any precipitation

Hīrna gets around 66 mm of rain over 13.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 46% and peaks near 51% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
151
250
349
448
547
646
745
845
944
1044
1143
1243
1343
1443
1543
1643
1744
1844
1944
2044
2145
2245
2346
2446
2546
2647
2747
2847
2948
3048

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the comfortable band about 59% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
131618
232608
332608
433598
534597
634597
734597
835587
935587
1035587
1135587
1234597
1334597
1434606
1534606
1634606
1734606
1833616
1933616
2033616
2133616
2233616
2333616
2434606
2535596
2636586
2737576
2838557
2939547
3040537

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 6:10 AM to 6:07 AM, and sunset from 6:21 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:106:21
212.26:106:20
312.26:106:19
412.26:106:19
512.16:106:18
612.16:096:18
712.16:096:17
812.16:096:16
912.16:096:16
1012.16:096:15
1112.16:096:15
1212.16:096:14
1312.16:096:13
1412.16:096:13
1512.16:096:12
1612.16:086:11
1712.06:086:11
1812.06:086:10
1912.06:086:10
2012.06:086:09
2112.06:086:08
2212.06:086:08
2312.06:086:07
2412.06:086:06
2512.06:076:06
2612.06:076:05
2712.06:076:05
2811.96:076:04
2911.96:076:03
3011.96:076:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 5.55 kWh/m² to a high of 6.2 kWh/m² in February across the year — September's 5.88 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Intense
66.0Bright
76.0Bright
86.0Bright
96.0Bright
106.0Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Hīrna

In seasonPeak

In September, Hīrna sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Hīrna's rainy season runs March–October, when most of the year's rain falls.

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

Is September a good time to visit Hīrna?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.3
Sightseeing
7th-best month of the year
6.0
Beach & pool
7th-best month of the year

September is a reasonable time to visit Hīrna for sightseeing.

What to pack for Hīrna in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Hīrna sees daytime highs around 26°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 13 days see rain.

rain gearlight clothessun protection

UV index in Hīrna in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hīrna peaks around March 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 11 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 18UV 16Nov 23UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug14Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Hīrna in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Hīrna is worst in November — around 28 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateNov 2128 µg/m³Aug 1819 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb27Moderate
Mar26Moderate
Apr22Moderate
May21Moderate
Jun24Moderate
Jul23Moderate
Aug19Moderate
Sep21Moderate
Oct27Moderate
Nov28Moderate
Dec28Moderate
Location & terrain

Where is Hīrna?

Hīrna sits at 9.2°N, 41.1°E, 1,789 m above sea level, in Ethiopia. The nearest listed city is Āsbe Teferī, 29 km away.

Dire Dawa‘Alemaya

Topography around Hīrna

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hīrna.

Within 3 km, the terrain around Hīrna has large variations in elevation — a maximum elevation change of 601 m around an average of 1,925 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,423 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,667 m.

The land around Hīrna is covered by cropland (57%) and shrubs (36%) within 3 km, shrubs (51%) and cropland (46%) within 16 km, and shrubs (56%) and grassland (20%) within 80 km.

3 km
601 m
16 km
1,423 m
80 km
2,667 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Āsbe Teferī 29 km · Mī’ēso 38 km · Deder 39 km · Bedēsa 49 km · Chelenko 54 km · Gelemso 78 km · Dire Dawa 94 km · ‘Alemaya 102 km

Ethiopia travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / E / F / L
220 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$933
2025
Happiness
4.0 / 10
World Happiness, 2025
Safe drinking water
14%
of population, 2024
Homicide rate
8.5
per 100k, 2012
Road deaths
28.2
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 499
Religion
Ethiopian Orthodox 44%Muslim 31%Protestant 23%other 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hīrna (9.2167°, 41.1°, elevation 1,789 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).