Hamilton
Bermuda
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Hamilton, Bermuda

Yachts on the clear blue waters of a tropical lagoon in Hamilton, Bermuda
Yachts on the clear blue waters of a tropical lagoon in Hamilton, Bermuda
The first month of the autumn, September, is also a moderately hot month in Hamilton, Bermuda, with average temperature varying between 23.5°C (74.3°F) and 28.8°C (83.8°F).

Temperature

In Hamilton, the average high-temperature in September is essentially the same as in August - a still warm 28.8°C (83.8°F). In September, the average low-temperature is 23.5°C (74.3°F).

Rainfall

In Hamilton, during September, the rain falls for 11 days and regularly aggregates up to 129.3mm (5.1") of precipitation. Throughout the year, there are 137 rainfall days, and 1409.7mm (55.5") of precipitation is accumulated.

Sea temperature

Months with the warmest seawater are August and September, with an average sea temperature of 27.8°C (82°F).
Note: 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.

Daylight

In Hamilton, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine in Hamilton is 7h.

UV index

In Hamilton, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 8 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Hamilton?

In September, in Hamilton, Bermuda, the average high-temperature is 28.8°C (83.8°F), and the average low-temperature is 23.5°C (74.3°F).

How many days does it rain in September in Hamilton?

In Hamilton, Bermuda, in September, during 11 rainfall days, 129.3mm (5.1") of precipitation is typically accumulated.

What are the months with the warmest sea water in Hamilton?

August and September, with an average sea temperature of 27.8°C (82°F), are months with the warmest seawater in Hamilton.

What is the sea water temperature in September in Hamilton?

In Hamilton, Bermuda, in September, the average water temperature is 27.8°C (82°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

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

The average length of the day in September in Hamilton, Bermuda, is 12.4h.

How long on average sun shines in September in Hamilton?

The average sunshine in September in Hamilton, Bermuda, is 7h.

How high is the UV index in September in Hamilton?

The average daily maximum UV index in September in Hamilton, Bermuda, is 8. A UV Index reading of 8 to 10 represents a very high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Hamilton, Bermuda
  • Average high temperature in September: 28.8°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is February (19.9°C).

  • Average low temperature in September: 23.5°C

The month with the highest average low temperature is August (24.5°C).
The coldest month (with the lowest average low temperature) is February (15.5°C).

Average rainfall in September - Hamilton, Bermuda
  • Average rainfall in September: 129.3mm

The wettest month (with the highest rainfall) is October (161.3mm).
The driest month (with the lowest rainfall) is May (82.8mm).

Average rainfall days in September - Hamilton, Bermuda
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is December (13 days).
Months with the lowest number of rainy days are February and April (10 days).

Average sea temperature in September - Hamilton, Bermuda
  • Average sea temperature in September: 27.8°C

Best months for swimming (with the highest average sea temperature) are August and September (27.8°C).
The coldest month (with the lowest average sea temperature) is March (19.2°C).

Average daylight in September / Average sunshine in September - Hamilton, Bermuda
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.2h).
The month with shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 7h

Months with most sunshine are June, July and August (Average sunshine: 9h).
Months with least sunshine are January, February and December (Average sunshine: 5).

Average UV index in September - Hamilton, Bermuda
  • Average UV index in September: 8

Months with the highest UV index are May, June, July and August (UV index 10).
The month with the lowest UV index is December (UV index 3).