Climate and average weather in Rumbek
In Rumbek, the summers are sweltering, fairly dry, and partly cloudy and the winters are hot and mostly cloudy.
Over the course of the year, the temperature in Rumbek typically varies from 22°C to 38°C, and is rarely below 21°C or above 40°C. March is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Rumbek for warm-weather activities is from late May to late December.
- Hottest
- Mar
- 38°
- Coldest
- Jul
- 22°
- Wettest
- Aug
- 174 mm
- Driest
- Jan
- 3 mm
- Rain / yr
- 1034 mm
- 161 wet days
- Daylight
- 11.6–12.4 h
- shortest–longest
- Elevation
- 428 m
- 6.8°N
- Clearest
- Dec
- 41% cloud
Rumbek is human settlement.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Rumbek weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late May to late December.
Temperature through the year
Daily average highs and lows in Rumbek, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Rumbek stay fairly even through the year, without a distinct hot or cool season. The warmest month is March, with an average high of 38°C and low of 26°C; the coolest is July, with an average low of 22°C and high of 30°C.
Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 36 | 37 | 38 | 36 | 33 | 31 | 30 | 30 | 31 | 31 | 33 | 35 |
| Avg low (°C) | 24 | 25 | 26 | 26 | 24 | 23 | 22 | 22 | 22 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 36 | 24 |
| Feb | 37 | 25 |
| Mar | 38 | 26 |
| Apr | 36 | 26 |
| May | 33 | 24 |
| Jun | 31 | 23 |
| Jul | 30 | 22 |
| Aug | 30 | 22 |
| Sep | 31 | 22 |
| Oct | 31 | 23 |
| Nov | 33 | 23 |
| Dec | 35 | 23 |
How hot and cold Rumbek really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Rumbek feels like about 38°C (around April 12). Nearly every day a year carries some heat stress, peaking in April.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 36 | 37 | 38 | 38 | 37 | 35 | 34 | 34 | 34 | 35 | 35 | 35 |
| Air high (°C) | 36 | 37 | 38 | 36 | 33 | 31 | 30 | 30 | 31 | 31 | 33 | 35 |
| Feels-like low (°C) | 24 | 25 | 26 | 26 | 24 | 23 | 22 | 22 | 22 | 23 | 23 | 23 |
| Air low (°C) | 24 | 25 | 26 | 26 | 24 | 23 | 22 | 22 | 22 | 23 | 23 | 23 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 36 | 36 | 24 | 24 |
| Feb | 37 | 37 | 25 | 25 |
| Mar | 38 | 38 | 26 | 26 |
| Apr | 38 | 36 | 26 | 26 |
| May | 37 | 33 | 24 | 24 |
| Jun | 35 | 31 | 23 | 23 |
| Jul | 34 | 30 | 22 | 22 |
| Aug | 34 | 30 | 22 | 22 |
| Sep | 34 | 31 | 22 | 22 |
| Oct | 35 | 31 | 23 | 23 |
| Nov | 35 | 33 | 23 | 23 |
| Dec | 35 | 35 | 23 | 23 |
Average hourly temperature in Rumbek
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on March afternoons, near 38°C, and coldest before dawn in July, near 22°C.
Rumbek weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 36° / 24° | 3 | 0.4 | 11.6 | 2.7 |
| Feb | 37° / 25° | 4 | 1 | 11.8 | 1.7 |
| Mar | 38° / 26° | 24 | 5.1 | 12 | 1.4 |
| Apr | 36° / 26° | 77 | 13.7 | 12.1 | 1.9 |
| May | 33° / 24° | 136 | 20.7 | 12.3 | 2.6 |
| Jun | 31° / 23° | 132 | 20.6 | 12.4 | 3.2 |
| Jul | 30° / 22° | 167 | 23.1 | 12.4 | 3.4 |
| Aug | 30° / 22° | 174 | 24.1 | 12.2 | 3.3 |
| Sep | 31° / 22° | 150 | 21.9 | 12 | 3.3 |
| Oct | 31° / 23° | 131 | 21.1 | 11.8 | 3.2 |
| Nov | 33° / 23° | 33 | 8.4 | 11.7 | 3.6 |
| Dec | 35° / 23° | 4 | 1 | 11.6 | 3.2 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Rumbek gets about 1034 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 6.8 months, from around Apr 13 to Nov 5, peaking in August at about 78% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 1.
August is the wettest month by volume, with 174 mm over about 24 wet days; January is the driest, with 3 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 1 | 3 | 18 | 45 | 66 | 69 | 75 | 78 | 73 | 67 | 29 | 3 |
| Rain days | 0 | 1 | 5 | 14 | 21 | 21 | 23 | 24 | 22 | 21 | 8 | 1 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 1 | 0 |
| Feb | 3 | 1 |
| Mar | 18 | 5 |
| Apr | 45 | 14 |
| May | 66 | 21 |
| Jun | 69 | 21 |
| Jul | 75 | 23 |
| Aug | 78 | 24 |
| Sep | 73 | 22 |
| Oct | 67 | 21 |
| Nov | 29 | 8 |
| Dec | 3 | 1 |
Monthly rainfall
Over a full year, Rumbek collects about 1034 mm of rain across 161 wet days — roughly 86 mm in an average month.
It doesn’t fall evenly. August is the wettest month with 174 mm, while January is the driest at just 3 mm. The three wettest months alone bring about 47% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 3 | 4 | 24 | 77 | 136 | 132 | 167 | 174 | 150 | 131 | 33 | 4 |
| Rain days | 0 | 1 | 5 | 14 | 21 | 21 | 23 | 24 | 22 | 21 | 8 | 1 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 3 | 0 |
| Feb | 4 | 1 |
| Mar | 24 | 5 |
| Apr | 77 | 14 |
| May | 136 | 21 |
| Jun | 132 | 21 |
| Jul | 167 | 23 |
| Aug | 174 | 24 |
| Sep | 150 | 22 |
| Oct | 131 | 21 |
| Nov | 33 | 8 |
| Dec | 4 | 1 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Rumbek, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around November 4 and lasts for 4.6 months, ending around March 24. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 73% of the time on average.
The cloudier part of the year begins around March 25 and lasts for 7.4 months, ending around November 3. The cloudiest month is August, when it is overcast or mostly cloudy 67% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 67 | 65 | 50 | 35 | 35 | 38 | 34 | 33 | 39 | 35 | 57 | 73 |
| Cloudier (%) | 33 | 35 | 50 | 65 | 65 | 62 | 66 | 67 | 61 | 65 | 43 | 27 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 67 | 33 |
| Feb | 65 | 35 |
| Mar | 50 | 50 |
| Apr | 35 | 65 |
| May | 35 | 65 |
| Jun | 38 | 62 |
| Jul | 34 | 66 |
| Aug | 33 | 67 |
| Sep | 39 | 61 |
| Oct | 35 | 65 |
| Nov | 57 | 43 |
| Dec | 73 | 27 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around May 27, brings about 12 h 24 min of light; the shortest, around January 1, only 11 h 36 min — a swing of roughly 0 h 48 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.6 | 11.8 | 12.0 | 12.1 | 12.3 | 12.4 | 12.4 | 12.2 | 12.0 | 11.8 | 11.7 | 11.6 |
| Sunrise (AM) | 7:21 | 7:23 | 7:12 | 6:57 | 6:48 | 6:50 | 6:56 | 6:59 | 6:55 | 6:51 | 6:56 | 7:09 |
| Sunset (PM) | 7:00 | 7:09 | 7:10 | 7:06 | 7:07 | 7:13 | 7:18 | 7:12 | 6:57 | 6:42 | 6:37 | 6:46 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 11.6 | 7:21 | 7:00 |
| Feb | 11.8 | 7:23 | 7:09 |
| Mar | 12.0 | 7:12 | 7:10 |
| Apr | 12.1 | 6:57 | 7:06 |
| May | 12.3 | 6:48 | 7:07 |
| Jun | 12.4 | 6:50 | 7:13 |
| Jul | 12.4 | 6:56 | 7:18 |
| Aug | 12.2 | 6:59 | 7:12 |
| Sep | 12.0 | 6:55 | 6:57 |
| Oct | 11.8 | 6:51 | 6:42 |
| Nov | 11.7 | 6:56 | 6:37 |
| Dec | 11.6 | 7:09 | 6:46 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Rumbek averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 17 days.
The sunnier stretch runs 4.4 months, from around Nov 3 to Mar 17. The sunniest month is December, with roughly 16 sunny days (bright).
The greyest month is August, down near 3 sunny days — about 83% fewer than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 15 | 13 | 8 | 5 | 5 | 5 | 4 | 3 | 5 | 4 | 10 | 16 |
| Sky | Mixed | Mixed | Mixed | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Mixed | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 15 | Mixed |
| Feb | 13 | Mixed |
| Mar | 8 | Mixed |
| Apr | 5 | Gloomy |
| May | 5 | Gloomy |
| Jun | 5 | Gloomy |
| Jul | 4 | Gloomy |
| Aug | 3 | Gloomy |
| Sep | 5 | Gloomy |
| Oct | 4 | Gloomy |
| Nov | 10 | Mixed |
| Dec | 16 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Rumbek, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 7.8 months, from around April 2 to November 23. The muggiest month is May, when the air feels humid, muggy or worse about 100% of the time.
The most comfortable stretch runs from around November 24 to April 1, and January is the most comfortable month — the air is dry or comfortable 95% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 86 | 79 | 35 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 57 |
| Comfortable (%) | 9 | 11 | 18 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 20 |
| Humid (%) | 4 | 7 | 22 | 15 | 1 | 0 | 0 | 0 | 0 | 1 | 15 | 13 |
| Muggy (%) | 2 | 3 | 21 | 42 | 19 | 9 | 10 | 5 | 4 | 10 | 37 | 9 |
| Oppressive (%) | 0 | 0 | 4 | 33 | 80 | 91 | 90 | 95 | 96 | 89 | 32 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| Jan | 86 | 9 | 4 | 2 | 0 |
| Feb | 79 | 11 | 7 | 3 | 0 |
| Mar | 35 | 18 | 22 | 21 | 4 |
| Apr | 4 | 6 | 15 | 42 | 33 |
| May | 0 | 0 | 1 | 19 | 80 |
| Jun | 0 | 0 | 0 | 9 | 91 |
| Jul | 0 | 0 | 0 | 10 | 90 |
| Aug | 0 | 0 | 0 | 5 | 95 |
| Sep | 0 | 0 | 0 | 4 | 96 |
| Oct | 0 | 0 | 1 | 10 | 89 |
| Nov | 6 | 9 | 15 | 37 | 32 |
| Dec | 57 | 20 | 13 | 9 | 1 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Rumbek is typically calm, near 7 km/h, and varies little with the seasons.
The windier part of the year lasts 5.8 months, from around Nov 17 to May 13. The windiest month is January, averaging about 9 km/h (calm).
The calmer part of the year runs from around May 14 to Nov 16, with September the calmest month at about 5 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 9 | 9 | 9 | 8 | 7 | 6 | 6 | 5 | 5 | 6 | 7 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 9 | calm |
| Feb | 9 | calm |
| Mar | 9 | calm |
| Apr | 8 | calm |
| May | 7 | calm |
| Jun | 6 | calm |
| Jul | 6 | calm |
| Aug | 5 | calm |
| Sep | 5 | calm |
| Oct | 6 | calm |
| Nov | 7 | calm |
| Dec | 9 | calm |
Hazard calendar for Rumbek
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Rumbek's rainy season runs May–October, when most of the year's rain falls.
Best time to visit Rumbek
To characterize how pleasant the weather is in Rumbek throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early June, Rumbek is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Rumbek for general outdoor tourist activities is from late May to mid January, with a peak score in the second week of November.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 2.7 | 1.7 | 1.4 | 1.9 | 2.6 | 3.2 | 3.4 | 3.3 | 3.3 | 3.2 | 3.5 | 3.2 |
| Rating | poor | poor | poor | poor | poor | poor | poor | poor | poor | poor | fair | poor |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 2.7 | poor |
| Feb | 1.7 | poor |
| Mar | 1.4 | poor |
| Apr | 1.9 | poor |
| May | 2.6 | poor |
| Jun | 3.2 | poor |
| Jul | 3.4 | poor |
| Aug | 3.3 | poor |
| Sep | 3.3 | poor |
| Oct | 3.2 | poor |
| Nov | 3.5 | fair |
| Dec | 3.2 | poor |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Rumbek for hot-weather activities is from early November to late January, with a peak score in the first week of December.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Rumbek, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around March (highs near 38°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 30°C), pack light clothes, rain gear and sun protection.
In March, Rumbek sees daytime highs around 38°C and nights near 26°C. Pack light clothes and sun protection. About 5 days see rain.
UV index (midday) in Rumbek by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Rumbek peaks around March 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 11 | 14 | 13 | 11 | 11 | 11 | 13 | 12 | 13 | 10 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 11 | Extreme |
| Mar | 14 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Average hourly UV index in Rumbek
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in March the burn window is concentrated in the middle of the day: about 8 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 7.5 | 7.5 | 8 | 8 | 8 | 8 | 7.5 | 8 | 8 | 8 | 7.5 | 7 |
| UV ≥ 6 (h/day) | 5 | 5.5 | 6.5 | 6 | 5.5 | 5.5 | 5.5 | 6 | 6 | 6 | 5 | 4.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 7.5 | 5 |
| Feb | 7.5 | 5.5 |
| Mar | 8 | 6.5 |
| Apr | 8 | 6 |
| May | 8 | 5.5 |
| Jun | 8 | 5.5 |
| Jul | 7.5 | 5.5 |
| Aug | 8 | 6 |
| Sep | 8 | 6 |
| Oct | 8 | 6 |
| Nov | 7.5 | 5 |
| Dec | 7 | 4.5 |
Air quality in Rumbek by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Rumbek is worst in January — around 81 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (September, 11 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 81 | 77 | 51 | 25 | 12 | 16 | 16 | 12 | 11 | 13 | 37 | 80 |
| Level | Unhealthy | Unhealthy | Poor | Moderate | Good | Moderate | Moderate | Good | Good | Moderate | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 81 | Unhealthy |
| Feb | 77 | Unhealthy |
| Mar | 51 | Poor |
| Apr | 25 | Moderate |
| May | 12 | Good |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 12 | Good |
| Sep | 11 | Good |
| Oct | 13 | Moderate |
| Nov | 37 | Poor |
| Dec | 80 | Unhealthy |
Growing season
Rumbek is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Rumbek banks about 6,737 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around March.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 608 | 591 | 676 | 620 | 580 | 515 | 502 | 498 | 494 | 525 | 539 | 589 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 608 |
| Feb | 591 |
| Mar | 676 |
| Apr | 620 |
| May | 580 |
| Jun | 515 |
| Jul | 502 |
| Aug | 498 |
| Sep | 494 |
| Oct | 525 |
| Nov | 539 |
| Dec | 589 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Rumbek receives about 5.7 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 5.1 and 6.4 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.1 | 6.3 | 6.1 | 5.8 | 5.6 | 5.3 | 5.1 | 5.3 | 5.7 | 5.6 | 5.5 | 5.7 |
| Level | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.1 | Intense |
| Feb | 6.3 | Intense |
| Mar | 6.1 | Intense |
| Apr | 5.8 | Bright |
| May | 5.6 | Bright |
| Jun | 5.3 | Bright |
| Jul | 5.1 | Bright |
| Aug | 5.3 | Bright |
| Sep | 5.7 | Bright |
| Oct | 5.6 | Bright |
| Nov | 5.5 | Bright |
| Dec | 5.7 | Bright |
Where is Rumbek?
Rumbek sits at 6.8°N, 29.7°E, 428 m above sea level, in South Sudan. The nearest listed city is Tonj, 122 km away.
Topography around Rumbek
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rumbek.
Within 3 km, the terrain around Rumbek has only modest variations in elevation — a maximum elevation change of 10 m around an average of 422 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 47 m; within 80 km, only modest variations in elevation — a maximum elevation change of 160 m.
The land around Rumbek is covered by grassland (72%) and artificial surfaces (20%) within 3 km, grassland (67%) and shrubs (26%) within 16 km, and grassland (63%) and shrubs (22%) within 80 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
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 Rumbek (6.8062°, 29.6774°, elevation 428 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).