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Weather in Siaya

Daily Weather Forecast in Siaya

Climate Conditions: overcast clouds
Humidity: 73%
Wind speed: 6.55 km/h
Wind direction: 113°
Daily Weather Forecast Evolution (°C)
Lowest temperature
Highest temperature
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Timezone: GMT+05:30
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Climate and Weather in Siaya, Kenya

Siaya is a county located in the western part of Kenya, specifically in the Nyanza region. It is known for its diverse landscapes, rich cultural heritage, and agricultural activities. Understanding the climate and weather patterns in Siaya is crucial for residents, tourists, and investors to make informed decisions. In this article, we will explore the climate and weather conditions in Siaya throughout the year.

Geographical Location and Topography

Siaya County is situated approximately 337 kilometers northwest of Nairobi, the capital city of Kenya. It lies between latitude 0° 27' and 0° 14' North and longitude 34° 44' and 34° 59' East. The county shares borders with Busia County to the west, Kisumu County to the south, and Vihiga County to the east. The topography of Siaya is characterized by rolling plains, hills, and the presence of Lake Victoria to the south. The county's proximity to Lake Victoria significantly influences its climate, resulting in unique weather patterns.


Siaya has a tropical monsoon climate, which is classified as Aw in the Köppen-Geiger climate classification system. This means that the region experiences distinct wet and dry seasons throughout the year. The wet season in Siaya generally occurs between April and November, with the highest rainfall amounts typically experienced between April and June and a secondary peak in October. During this period, the county receives substantial amounts of rainfall, making it ideal for agricultural activities. The dry season in Siaya spans from December to March, with January and February being the driest months. During this period, rainfall is significantly reduced, and temperatures tend to be higher. The dry season is characterized by sunny and warm weather, making it a popular time for outdoor activities and tourism.


Siaya experiences relatively high temperatures throughout the year due to its proximity to the equator. The average annual temperature in the county ranges between 22°C (72°F) and 31°C (88°F). During the dry season, temperatures can soar to around 35°C (95°F) during the day, while the nights offer some relief with temperatures dropping to around 18°C (64°F). In contrast, during the wet season, temperatures range between 25°C (77°F) and 30°C (86°F) during the day and drop to around 20°C (68°F) at night.


Siaya receives a significant amount of rainfall, especially during the wet season. On average, the county receives approximately 1,200 to 1,500 millimeters (47 to 59 inches) of rainfall annually. During the wettest months of April and May, Siaya receives an average of 200 to 250 millimeters (8 to 10 inches) of rainfall. The second wettest period occurs in October, with an average rainfall of 100 to 150 millimeters (4 to 6 inches). The rainfall distribution in Siaya is essential for agricultural practices, contributing to the county's status as a significant agricultural hub.


Siaya experiences high humidity levels throughout the year, primarily due to its proximity to Lake Victoria. The humidity levels range between 70% and 80%, making the atmosphere feel moist and sticky. The high humidity can sometimes contribute to a feeling of discomfort, especially during the hot season.

Wind Patterns

Siaya experiences mild to moderate winds throughout the year. During the wet season, winds are generally light, while the dry season may bring slightly stronger winds. However, Siaya is not prone to strong winds or severe storms.

Best Time to Visit Siaya

The best time to visit Siaya depends on personal preferences and interests. For those interested in witnessing the lush green landscapes and vibrant agricultural activities, the wet season between April and November is ideal. However, it's important to note that heavy rainfall may occasionally disrupt travel and outdoor activities during this period. For individuals who prefer dry and sunny weather, the dry season between December and March is the best time to visit Siaya. This period offers pleasant temperatures and is perfect for outdoor exploration, wildlife safaris, and cultural experiences.


Siaya, Kenya, experiences a tropical monsoon climate, characterized by distinct wet and dry seasons. The county receives significant rainfall between April and November, with the highest amounts in April, May, and October. The temperature in Siaya remains relatively high throughout the year, ranging from 22°C (72°F) to 31°C (88°F), with the dry season being warmer. Siaya's proximity to Lake Victoria contributes to its high humidity levels. Whether visiting for agricultural activities or leisure, understanding Siaya's climate and weather patterns is essential for planning a successful trip or investment. Sources: - Kenya Meteorological Department - Climate-Data.org

FAQ's about Siaya's Weather:
Q - What is the Latitude and Longitude of Siaya?

A - Siaya's Latitude is 0.061160 & Longitude is 34.288231.

Q - What is the weather in Siaya today?

A - Weather in Siaya is 20° today.

Q - What is the climatic condition of Siaya today?

A - Climate Conditions in Siaya shows overcast clouds today.

Q - What is the humidity in Siaya today?

A - Humidity in Siaya is 73% today.

Q - What is the wind speed in Siaya today?

A - Wind speed in Siaya is 6.55 km/h, flowing at 113° wind direction. today.

Weather in Siaya