Gulu weather in September

In September, Gulu sees average daytime highs of 28°C and overnight lows near 19°C, with 163 mm of rain across 20.1 wet days and about 12 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Gulu's 4th-clearest and 9th-windiest month. For the whole year in context, see Gulu's year-round climate.

Daytime high
28°
8th warmest
Overnight low
19°
3rd coldest
Rainfall
163 mm
20.1 wet days
Daylight
12 hours
6:45 AM – 6:46 PM
Cloud cover
61%
4th clearest
Wind
5 km/h
9th windiest
Solar energy
6.11 kWh/m²
Travel score
4.6
out of 10

Gulu is city in Uganda.

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 28°C through the month.

A typical September day in Gulu reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12818
22818
32819
42819
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819

How September really feels in Gulu

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Gulu weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 21°183.111.94.6
Feb33° / 21°184.111.93.9
Mar32° / 21°9812.6123.7
Apr29° / 20°1982212.13.7
May28° / 20°18424.112.14.0
Jun28° / 19°13419.412.24.9
Jul27° / 18°16022.512.14.6
Aug27° / 18°20024.712.14.4
Sep28° / 19°16320.1124.6
Oct29° / 19°1952111.94.3
Nov29° / 19°12113.911.94.8
Dec30° / 20°305.311.85.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34852
44852
54852
64951
75050
85050
95248
105248
115248
125347
135347
145446
155545
165446
175446
185347
195347
205248
215248
225050
234951
244753
254654
264555
274456
284258
294258
304159

Chance of precipitation in September

Any precipitation

Gulu gets around 163 mm of rain over 20.1 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 67% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
178
277
376
475
574
673
772
871
970
1068
1167
1266
1365
1464
1563
1662
1762
1862
1962
2062
2162
2263
2363
2464
2564
2665
2765
2866
2966
3067

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)
112277
212277
312277
412376
512376
612376
712376
812376
912475
1012475
1112475
1212475
1312574
1412574
1512574
1612574
1712574
1812574
1912574
2012574
2112574
2212574
2312574
2412574
2512475
2612475
2712475
2812475
2912475
3012376

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:49 AM to 6:41 AM, and sunset from 6:52 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:496:52
212.16:496:52
312.06:486:51
412.06:486:51
512.06:486:50
612.06:486:50
712.06:476:50
812.06:476:49
912.06:476:49
1012.06:466:48
1112.06:466:48
1212.06:466:47
1312.06:466:47
1412.06:456:46
1512.06:456:46
1612.06:456:46
1712.06:446:45
1812.06:446:45
1912.06:446:44
2012.06:446:44
2112.06:436:43
2212.06:436:43
2312.06:436:42
2412.06:426:42
2512.06:426:42
2612.06:426:41
2712.06:426:41
2812.06:416:40
2912.06:416:40
3012.06:416:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.11 kWh/m².

For context, solar energy here swings from a low near 5.26 kWh/m² to a high of 6.18 kWh/m² in February across the year — September's 6.11 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
66.0Bright
76.0Bright
86.0Intense
96.0Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Is September a good time to visit Gulu?

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

4.6
Sightseeing
4th-best month of the year
5.2
Beach & pool
6th-best month of the year

September is a reasonable time to visit Gulu for sightseeing.

What to pack for Gulu in September

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

In September, Gulu sees daytime highs around 28°C and nights near 19°C. Pack light clothes, rain gear and sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Gulu 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 Gulu peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 15Jun 21UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct14Extreme
Nov11Extreme
Dec11Extreme

Air quality in Gulu 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 Gulu is worst in January — around 108 µg/m³ PM2.5 (unhealthy), about 7.7× the cleanest month (April, 14 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModerateJan 15102 µg/m³Apr 1914 µg/m³
PM2.5 (µg/m³)Level
Jan108Unhealthy
Feb51Poor
Mar19Moderate
Apr14Moderate
May16Moderate
Jun24Moderate
Jul25Moderate
Aug20Moderate
Sep17Moderate
Oct17Moderate
Nov25Moderate
Dec66Unhealthy
Location & terrain

Where is Gulu?

Gulu sits at 2.8°N, 32.3°E, 1,104 m above sea level, in Uganda. The nearest listed city is Opit, 27 km away.

AnakaKitgumAdjumaniLiraApacKiryandongo Refugee CampPakwach

Topography around Gulu

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

Within 3 km, the terrain around Gulu has only modest variations in elevation — a maximum elevation change of 89 m around an average of 1,096 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 209 m; within 80 km, large variations in elevation — a maximum elevation change of 751 m.

The land around Gulu is covered by trees (32%), artificial surfaces (32%) and shrubs (20%) within 3 km, shrubs (32%), cropland (29%) and grassland (21%) within 16 km, and grassland (39%) and cropland (27%) within 80 km.

3 km
89 m
16 km
209 m
80 km
751 m
treesshrubsgrasslandcroplandartificial surfaceswetland
September weather nearby: Opit 27 km · Anaka 44 km · Kitgum 86 km · Adjumani 88 km · Lira 89 km · Apac 93 km · Kiryandongo Refugee Camp 94 km · Pakwach 95 km

Uganda travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type G
240 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$1,206
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
18%
of population, 2024
Homicide rate
9
per 100k, 2023
Road deaths
29.4
per 100k/yr, 2019
Income group
Low
World Bank
English
Moderate
EF EPI 518
Religion
Protestant 45%Roman Catholic 39%Muslim 14%other 2%

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 Gulu (2.7746°, 32.299°, elevation 1,104 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).