Blue Nile Climate

Last updated: January 18, 2025

The climate of the Blue Nile region in Sudan is classified as BSh according to the Köppen-Geiger system, characterized by a distinct seasonal variation. Temperatures in this region exhibit a notable range, with a minimum of 16°C (61°F) recorded in January, rising to an average of 29°C (85°F) throughout the year. The peak heat occurs in April, where temperatures can soar to a maximum of 45°C (113°F). This climatic profile reflects the region's arid conditions and highlights the significant temperature fluctuations that define the Blue Nile's weather patterns.

Blue Nile temperature by month

In the Blue Nile region of Sudan, temperature patterns exhibit distinct seasonal trends throughout the year. The coldest month is January, with nighttime lows of 16°C (61°F), gradually increasing as winter transitions to spring. By April, temperatures peak, reaching maximums of 45°C (113°F) while maintaining an average of 33°C (92°F), highlighting the intense heat of the dry season. As cooler months approach in the late summer, temperatures begin to moderate, with averages dropping to a cooler 26°C (78°F) in August and September. This pattern illustrates a clear shift from extreme heat in the spring to milder conditions in the late summer and early autumn, with minimal variations in nighttime temperatures throughout the year.

Monthly Temperatures in Blue Nile, Sudan

The chart illustrates Blue Nile's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec848691918884807881838786
Data source: Blue Nile temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

In the Blue Nile region of Sudan, Ar Ruseris experiences a minimum temperature of 16°C (62°F) in January, climbing to a maximum of 45°C (113°F) in April, as detailed in the monthly temperatures in Ar Ruseris. Kurmuk shares a similar January minimum of 16°C (62°F), but peaks at 42°C (107°F) in March, according to the monthly temperatures in Kurmuk. Meanwhile, Ad-Damazin also has a January minimum of 16°C (61°F) and reaches a maximum of 44°C (112°F) in April, highlighted in the monthly temperatures in Ad-Damazin.

Precipitation Patterns in Blue Nile

The Blue Nile region of Sudan experiences a pronounced dry season followed by a marked wet season, reflecting the influence of its climate. From January to March, precipitation is virtually nonexistent, with January and February recording 0 mm of rainfall. A slight increase is observed in March, with just 1 mm, before the transition to the wet season begins. April heralds the onset of rain, albeit modestly, with 9 mm over approximately 2 rainy days, while May marks a significant rise in precipitation, accumulating 48 mm across 12 days.

As the wet season progresses, July and August witness peak rainfall, with July receiving 91 mm and August reaching 121 mm, showcasing an average of 16 to 20 rainy days each month. September and October experience a gradual decline in precipitation, recording 71 mm and 74 mm, respectively. By November, rainfall drops dramatically to just 6 mm, and December sees a return to dry conditions, reaffirming the region's seasonal variability. This distinct wet-dry cycle plays a crucial role in the ecological and agricultural patterns of the Blue Nile region.

Monthly Average Precipitation in Blue Nile, Sudan

The average monthly precipitation in Blue Nile, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec0029485691121717460
Data source: Blue Nile precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Sunshine Duration in Blue Nile

In the Blue Nile region of Sudan, sunshine duration showcases a notable seasonal pattern, marked by a steady increase as winter transitions into spring and summer. Starting with 275 hours of sunshine in January, the region experiences a gradual rise, peaking in March with 346 hours. This trend continues into May, where sunshine hours reach 347, reflecting the growing warmth and intensity of the sun during the lead-up to the wet season. Interestingly, the months of April and June also remain consistently bright, with 341 and 320 hours of sunshine, respectively, providing an overall optimistic ambiance as the region prepares for the impending rains.

As the wet season progresses through the summer months, sunshine hours begin to decline, yet the reduction is not drastic. July sees a drop to 295 hours, while August records 307 hours before stabilizing in September with 317 hours. This slight decrease in sunlight is balanced by the lushness brought by the rains, which enhances the landscape. By the end of the year, sunshine hours rebound again, with December experiencing 332 hours, suggesting a return to clearer skies and drier conditions as the year concludes. Overall, the Blue Nile region undergoes distinct sunshine patterns, with peak sunlight duration occurring in the spring and early summer, while still maintaining ample brightness throughout the year.

Monthly Sunshine in Blue Nile, Sudan

Monthly sunshine duration represents the total hours of direct sunlight Blue Nile receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec275h309h346h341h347h320h295h307h317h330h321h332h
Data source: Blue Nile sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Blue Nile UV Index Trends

The UV Index in the Blue Nile region of Sudan reveals consistently high levels of ultraviolet radiation throughout the year, necessitating caution for outdoor activities. Beginning in January, the UV Index registers at 11, classified as "extreme," and remains alarmingly high, peaking at 14 during March and April. These months demand vigilant protection against sun exposure, as the burn time for unprotected skin is just 10 minutes. This extreme UV intensity poses significant health risks, particularly for individuals engaging in outdoor work or recreational activities.

As the year progresses, the UV Index generally remains high, with values fluctuating between 10 and 14. Notably, August marks another peak at 14, indicating the importance of sun protection during the mid-year months when UV radiation is at its strongest. By December, the UV Index decreases to 10, classified as "very high," leading to a slightly extended burn time of 15 minutes. While this suggests a marginal reduction in UV exposure, it is essential to maintain protective measures year-round, as the prevailing UV levels in the Blue Nile region consistently pose a serious health concern.

Monthly Maximum UV Index for Blue Nile, Sudan

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Blue Nile. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec111314141312131414131110
Data source: Blue Nile UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Daylight Hours in Blue Nile

In the Blue Nile region of Sudan, daylight duration demonstrates a relatively stable pattern throughout the year, with minor fluctuations that reflect the subtropical location of the region. Both January and February experience approximately 11 hours of daylight, providing a consistent light source during the cooler winter months. As spring approaches, daylight begins to increase subtly, reaching 12 hours in March and remaining at this duration from April through September. This sustained period of longer days coincides with growing temperatures and sets the stage for the vibrant energy of the wet season.

However, as the year transitions into autumn, daylight hours gradually taper off. By October, daylight returns to 11 hours, continuing through November and December. Despite this slight decrease, the consistent availability of around 11 to 12 hours of daylight throughout the majority of the year ensures ample sunlight for agricultural activities and daily life. This stable daylight pattern contributes to the region's agricultural cycles while also affecting the diurnal rhythms of both the environment and its inhabitants, making it vital for various aspects of life in the Blue Nile.

Average Monthly Daylight Hours in Blue Nile, Sudan

This chart shows the total daylight hours Blue Nile receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 31m11h 44m12h 3m12h 22m12h 37m12h 45m12h 41m12h 27m12h 9m11h 50m11h 34m11h 27m
Data source: Blue Nile daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Blue Nile's Popular Destinations

Ad-Damazin, Sudan experiences a hot semi-arid climate with significant temperature variation throughout the year. January temperatures range from a minimum of 16°C (61°F) to a maximum of 41°C (107°F), peaking in April and May with maximums of 44°C (112°F) and 43°C (110°F). Precipitation is minimal during the early months, ramping up from May, with August seeing the highest rainfall of 131 mm (5.2 in). The region boasts a substantial amount of sunshine, with March enjoying approximately 346 hours of sun. For more detailed climate information, visit Ad-Damazin climate.

The climate in Ar Ruseris, Sudan, is characterized by high temperatures and a distinct wet season. From January to April, temperatures gradually rise, reaching highs of up to 45°C (113°F) in April, while precipitation is minimal. The wet season lasts from May to September, peaking in August with about 118 mm (4.7 in) of rainfall, which coincides with the lowest average temperatures of the year. Sunshine is abundant throughout the year, with the highest hours in May at 351 hours. For more details, visit Ar Ruseris climate.

Kurmuk, Sudan experiences a hot climate with high temperatures ranging from an average of 25°C (76°F) in July to 31°C (89°F) in March and April. The warmest months see maximum temperatures reaching up to 42°C (107°F). Rainfall is primarily concentrated from May to October, with July and August experiencing the peak precipitation of around 104 mm (4.1 in) and 112 mm (4.4 in), respectively. Despite the rain, Kurmuk enjoys substantial sunshine throughout the year, averaging over 300 hours monthly in many months. For more detailed weather patterns, visit Kurmuk climate.

Conclusion

In summary, the Blue Nile region of Sudan is characterized by a distinctive climatic profile that includes extreme temperatures, high UV exposure, and stable daylight duration throughout the year. The pronounced dry and wet seasons shape not only the environmental landscape but also the lifestyle and agricultural practices of the area’s inhabitants. With peak temperatures and UV indices highlighting the need for sun protection, particularly during the hotter months, the region demands awareness and preparedness from those engaging in outdoor activities. Meanwhile, the consistent daylight hours contribute to a reliable rhythm of life, facilitating agricultural productivity and cultural practices. Overall, understanding these climatic elements is essential for fostering resilience and well-being in the Blue Nile community.

Discover the Climate of Blue Nile's Places

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