Tonj weather in April

In April, Tonj sees average daytime highs of 36°C and overnight lows near 26°C, with 63 mm of rain across 13.6 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 37°C in the first days to 35°C by the end. The sky is clear or mostly clear about 19% of the time in April, and the air most often feels muggy.

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

Daytime high
36°
3rd warmest
Overnight low
26°
12th coldest
Rainfall
63 mm
13.6 wet days
Daylight
12 h 12 min
7:01 AM – 7:10 PM
Cloud cover
68%
9th clearest
Wind
9 km/h
4th windiest
Solar energy
5.98 kWh/m²
Travel score
1.8
out of 10

Tonj is human settlement.

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 37°C in the first days to 35°C by the end.

A typical April day in Tonj reaches about 36°C in the afternoon and slips back to 26°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 39°C. Set against its neighbours, April runs about 2°C cooler than March and about 2°C warmer than May.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13726
23726
33726
43726
53726
63726
73726
83726
93726
103626
113626
123626
133626
143626
153626
163626
173626
183626
193626
203626
213526
223526
233526
243526
253526
263526
273526
283526
293526
303525

How April really feels in Tonj

Once humidity and wind are folded in, April averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tonj weather by month

How April compares with the rest of the year at a glance. April is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan36° / 23°10.311.62.8
Feb37° / 24°30.711.81.8
Mar38° / 26°214.5121.4
Apr36° / 26°6313.612.21.8
May34° / 25°1222012.32.5
Jun32° / 23°12720.312.43.1
Jul30° / 23°16322.912.43.4
Aug30° / 22°17823.612.23.3
Sep31° / 22°15222.4123.2
Oct32° / 23°12220.211.83.2
Nov33° / 23°235.711.73.6
Dec35° / 23°20.411.63.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 19% of April, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14852
24753
34753
44555
54555
64357
74159
84159
93961
103961
113862
123763
133763
143763
153664
163466
173466
183466
193466
203466
213466
223466
233466
243565
253565
263565
273565
283664
293664
303664

Chance of precipitation in April

Any precipitation

Tonj gets around 63 mm of rain over 13.6 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 59% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
125
227
328
430
531
633
735
836
938
1040
1141
1242
1344
1445
1546
1647
1749
1850
1951
2052
2152
2253
2354
2455
2555
2656
2757
2858
2958
3059

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 74% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1201426338
2181326349
31613253610
41412253711
51311253913
61110244014
71010234116
889224218
978214420
1077204422
1166194524
1256184626
1355174628
1444154630
1544144632
1643134634
1733124537
1833114539
1932104441
203294343
213284345
222274246
232274248
242164149
252164051
261153954
271153954
281153855
291143757
301143658

Wind in April

Winds average 9 km/h in April.

Across April, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in April

DaylightNight

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

Days grow by about 6 minutes over April. Sunrise moves from 7:08 AM to 6:55 AM, and sunset from 7:12 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.17:087:12
212.17:087:12
312.17:077:12
412.17:077:11
512.17:067:11
612.17:067:11
712.17:057:11
812.17:057:11
912.17:047:11
1012.17:047:11
1112.17:037:11
1212.17:037:11
1312.17:027:11
1412.17:027:10
1512.27:017:10
1612.27:017:10
1712.27:007:10
1812.27:007:10
1912.26:597:10
2012.26:597:10
2112.26:597:10
2212.26:587:10
2312.26:587:10
2412.26:577:10
2512.26:577:10
2612.26:577:10
2712.26:567:10
2812.26:567:10
2912.26:567:10
3012.26:557:10

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.98 kWh/m².

For context, solar energy here swings from a low near 5.14 kWh/m² to a high of 6.46 kWh/m² in February across the year — April's 5.98 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.8Bright
305.8Bright
Planning a trip in April

Hazard calendar for Tonj

In seasonPeak

None of Tonj's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

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

Is April a good time to visit Tonj?

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

1.8
Sightseeing
10th-best month of the year
4.3
Beach & pool
12th-best month of the year

April is a weaker month for outdoor sightseeing in Tonj.

What to pack for Tonj in April

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

In April, Tonj sees daytime highs around 36°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Tonj in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Tonj peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 21UV 13Dec 12UV 9
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Tonj in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Tonj is worst in December — around 50 µg/m³ PM2.5 (poor), about 4.6× the cleanest month (August, 11 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModeratePoorDec 1349 µg/m³Aug 2411 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb42Poor
Mar44Poor
Apr24Moderate
May12Good
Jun15Moderate
Jul14Moderate
Aug11Good
Sep11Good
Oct16Moderate
Nov46Poor
Dec50Poor
Location & terrain

Where is Tonj?

Tonj sits at 7.3°N, 28.7°E, 444 m above sea level, in South Sudan. The nearest listed city is Wau, 89 km away.

WauRumbekKuacjokGogrialLeerAweilWinejokAbyei

Topography around Tonj

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

Within 3 km, the terrain around Tonj has only modest variations in elevation — a maximum elevation change of 21 m around an average of 437 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, only modest variations in elevation — a maximum elevation change of 176 m.

The land around Tonj is covered by grassland (79%) within 3 km, grassland (64%) and shrubs (23%) within 16 km, and grassland (53%) and shrubs (32%) within 80 km.

3 km
21 m
16 km
73 m
80 km
176 m
treesshrubsgrasslandcroplandartificial surfaceswetland
April weather nearby: Wau 89 km · Rumbek 122 km · Kuacjok 138 km · Gogrial 154 km · Leer 198 km · Aweil 218 km · Winejok 228 km · Abyei 260 km

South Sudan travel facts

Travel advisory
Level 4
Do Not Travel
Prices
≈ 6% of US
price level, 2021
GDP per capita
$1,080
2015
Happiness
2.8 / 10
World Happiness, 2019
Homicide rate
14
per 100k, 2012
Road deaths
36.7
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Christian 61%folk religion 33%Muslim 6%

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 Tonj (7.2739°, 28.6775°, elevation 444 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).