September weather forecast
Garissa, Kenya

September welcomes a shift towards warmer conditions, marking the end of Garissa's brief cool season. Apart from marginally higher temperatures, the average wind speed begins to ease compared to August, resulting in more benign conditions. A consistently favorable weather condition in September paves the way for a smooth transition into the hotter months of the year. The sky remains predominantly clear, ensuring abundant sunshine throughout the month. Experiencing September in Garissa can be equated to experiencing a perfect blend of different weather elements.

Temperature

September's arrival in Garissa registers an average high-temperature of a still hot 33.1°C (91.6°F), closely aligning with the temperature of the previous month. During September nights, Garissa witnesses a consistent average temperature of 22.7°C (72.9°F).

Heat index

September's heat index is computed to be a sweltering 38°C (100.4°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in September is 56%.

Rainfall

In Garissa, Kenya, in September, it is raining for 4.6 days, with typically 2mm (0.08") of accumulated precipitation. Throughout the year, there are 103.3 rainfall days, and 326mm (12.83") of precipitation is accumulated.

Daylight

In Garissa, Kenya, the average length of the day in September is 12h and 7min.
On the first day of September in Garissa, sunrise is at 06:18 and sunset at 18:24. On the last day of the month, sunrise is at 06:07 and sunset at 18:14 EAT.

Sunshine

In Garissa, the average sunshine in September is 8.5h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Garissa are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.