Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September commences in Watamu with an average high-temperature of a still moderately hot 27.8°C (82°F), showing little deviation from August's 27.5°C (81.5°F). Registering an almost steady temperature, Watamu's nights in September see an average low of 23.8°C (74.8°F).Heat index
The heat index for September is estimated at a hot 31°C (87.8°F). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.Know that the heat index computations account for shaded terrains and slight winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Watamu, in September, during 13.4 rainfall days, 17mm (0.67") of precipitation is typically accumulated. Throughout the year, in Watamu, there are 184.6 rainfall days, and 473mm (18.62") of precipitation is accumulated.Sea temperature
July through September, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater in Watamu.Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as very agreeable and pleasurable for lengthy periods without discomfort.
Daylight
In Watamu, the average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 06:18 and sunset at 18:21. On the last day of September, sunrise is at 06:05 and sunset at 18:13 EAT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 7 suggests this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
Frequently asked questions
What is the usual temperature for Watamu in September?
What is the average humidity in September in Watamu?
How much does it rain in Watamu in September?
What months are the sea coldest in Watamu?
How warm is the water in September in Watamu?
What is the average length of the day in September in Watamu?
When are sunrise and sunset in September in Watamu?
How many hours of sunshine does Watamu have in September?
What are the months with the highest UV index in Watamu?
What is the month with the lowest UV index in Watamu?
What is the UV index intensity in September in Watamu?
Average temperature in September
Watamu, Kenya
- Average high temperature in September: 27.8°C
The warmest month (with the highest average high temperature) is March (30.9°C).
The month with the lowest average high temperature is July (27.4°C).
- Average low temperature in September: 23.8°C
The month with the highest average low temperature is April (26.4°C).
The coldest months (with the lowest average low temperature) are August and September (23.8°C).
Average pressure in September
Watamu, Kenya
- Average pressure in September: 1014.7mbar
The month with the highest atmospheric pressure is July (1015.5mbar).
The month with the lowest atmospheric pressure is March (1010.2mbar).
Average wind speed in September
Watamu, Kenya
- Average wind speed in September: 23.6km/h
The windiest month (with the highest average wind speed) is July (28.9km/h).
The calmest month (with the lowest average wind speed) is November (14.6km/h).
Average humidity in September
Watamu, Kenya
- Average humidity in September: 75%
The months with the highest relative humidity are January, February, October and November (77%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Watamu, Kenya
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is December (78mm).
The driest month (with the least rainfall) is February (14mm).
Average rainfall days in September
Watamu, Kenya
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is December (23.6 days).
The month with the least rainy days is February (7.2 days).
Average sea temperature in September
Watamu, Kenya
- Average sea temperature in September: 26°C
The best month for swimming (with the highest average sea temperature) is April (29°C).
The coldest months (with the lowest average sea temperature) are July, August and September (26°C).
Average daylight in September /
Average sunshine in September
Watamu, Kenya
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is November (Average sunshine: 10h and 54min).
The months with the least sunshine are February and May (Average sunshine: 8h and 6min).
Average sunshine days in September
Watamu, Kenya
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is December (4.7 days).
Average UV index in September
Watamu, Kenya
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Watamu, Kenya
- Average cloud cover in September: 38
The month with the most cloud cover is May (Cloud cover 43).
The month with the least cloud cover is December (Cloud cover 28).
Average visibility in September
Watamu, Kenya
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Watamu, Kenya
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