September weather forecast
Lamu, Kenya

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Weather in September

In September, temperatures in Lamu begin to climb. Embarking into the warmer half of the year, less rainfall and increasing temperatures become more prominent. Ocean breezes mitigate the heat, maintaining an equilibrium between comfort and warmth. While September continues the dry trend from August, the weather starts seesawing towards the hot and wetter months ahead.

Temperature

As Lamu steps into September, the average high-temperature holds at a still moderately hot 29°C (84.2°F), hinting at a minor fluctuation from the prior month. The low-temperature average for Lamu during September stands at a still warm 23°C (73.4°F).

Rainfall

In September, the rain falls for 7 days. Throughout September, 47mm (1.85") of precipitation is accumulated. Throughout the year, there are 105 rainfall days, and 895mm (35.24") of precipitation is accumulated.

Sea temperature

In Lamu, the average seawater temperature in September is 25.8°C (78.4°F).
Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) offer outstanding conditions for any water activity, providing extreme pleasure for extended periods.

Daylight

In September, the average length of the day is 12h and 6min.
On the first day of the month, sunrise is at 06:14 and sunset at 18:18. On the last day of September, sunrise is at 06:02 and sunset at 18:10 EAT.

Sunshine

The average sunshine in September in Lamu is 9h.

UV index

January through April, August through December, with an average maximum UV index of 12, are months with the highest UV index in Lamu. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum daily UV index of 12 during September morphs into the following directions:
Enforce all necessary precautions, unprotected skin might burn swiftly. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Stay cautious! Sand and water reflections increase UV radiation potency.
Updated: Jan 31, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is September in Lamu?

An average high-temperature, in September, in Lamu, is 29°C (84.2°F) and the average low-temperature is 23°C (73.4°F).

How much does it rain in Lamu in September?

In Lamu, Kenya, in September, it is raining for 7 days, with typically 47mm (1.85") of accumulated precipitation.

What is the water temperature in September in Lamu?

In Lamu, the average seawater temperature in September is 25.8°C (78.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September in Lamu?

The average day length in September is 12h and 6min.

What time are sunrise and sunset in September in Lamu?

In September, on the first day of the month, sunrise is at 06:14 and sunset at 18:18. On the last day of the month, in Lamu, Kenya, sunrise is at 06:02 and sunset at 18:10 EAT.

How long on average sun shines in September in Lamu?

The average sunshine duration in September in Lamu, Kenya, is 9h.

What is the month with the highest UV index in Lamu?

The months with the highest UV index are January through April, August through December, with an average maximum UV index of 12.

What is the UV index intensity in September in Lamu?

In September, the average daily maximum UV index in Lamu is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Lamu, Kenya

Average temperature in September - Lamu, Kenya
  • Average high temperature in September: 29°C

The warmest months (with the highest average high temperature) are February, March, April and December (32°C).
The months with the lowest average high temperature are July and August (28°C).

  • Average low temperature in September: 23°C

The month with the highest average low temperature is April (26°C).
The coldest months (with the lowest average low temperature) are June, July, August and September (23°C).

Average rainfall in September
Lamu, Kenya

Average rainfall in September - Lamu, Kenya
  • Average rainfall in September: 47mm

The wettest month (with the highest rainfall) is May (299mm).
The driest month (with the least rainfall) is February (3mm).

Average rainfall days in September
Lamu, Kenya

Average rainfall days in September - Lamu, Kenya
  • Average rainfall days in September: 7 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is February (3 days).

Average sea temperature in September
Lamu, Kenya

Average sea temperature in September - Lamu, Kenya
  • Average sea temperature in September: 25.8°C

The best month for swimming (with the highest average sea temperature) is April (28.9°C).
The coldest month (with the lowest average sea temperature) is August (25.4°C).

Average daylight in September /
Average sunshine in September
Lamu, Kenya

Average daylight in September / Average sunshine in September - Lamu, 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: 12h and 0min).

  • Average sunshine in September: 9h

The month with the most sunshine is October (Average sunshine: 10h).
The months with the least sunshine are April, May, June and July (Average sunshine: 8h).

Average UV index in September
Lamu, Kenya

Average UV index in September - Lamu, Kenya
  • Average UV index in September: 12

The months with the highest UV index are January, February, March, April, August, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 10).

Lamu, Kenya

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