Bol
Croatia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Bol, Croatia

The first month of the autumn, September, is still a warm month in Bol, Croatia, with average temperature ranging between min 16°C (60.8°F) and max 25°C (77°F).

Temperature

In September, the average high-temperature slightly decreases, from a warm 28°C (82.4°F) in August, to a still moderately hot 25°C (77°F). In September, in Bol, the average low-temperature is 16°C (60.8°F).

Rainfall

In September, the rain falls for 9 days. Throughout September, 67mm (2.6") of precipitation is accumulated. In Bol, during the entire year, the rain falls for 134 days and collects up to 904mm (35.6") of precipitation.

Sea temperature

In Bol, the average water temperature is 23.9°C (75°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.9°C (75°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

The average length of the day in Bol is 12.5h.

Sunshine

The average sunshine in September is 8h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for the average person.
In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in September in Bol?

In Bol, in September, the average high-temperature is 25°C (77°F), and the average low-temperature is 16°C (60.8°F).

How much does it rain in Bol in September?

In Bol, in September, it is raining for 9 days, with typically 67mm (2.6") of accumulated precipitation.

What is the water temperature in September in Bol?

In Bol, the average seawater temperature in September is 23.9°C (75°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23.9°C (75°F) water.

How many hours of daylight does Bol have in September?

The average length of the day in September is 12.5h.

How many hours of sunshine does Bol have in September?

The average sunshine in September is 8h.

How high is the UV index in September in Bol?

The average daily maximum UV index in September in Bol is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in September - Bol, Croatia
  • Average high temperature in September: 25°C

Warmest months (with the highest average high temperature) are July and August (28°C).
The month with the lowest average high temperature is January (9°C).

  • Average low temperature in September: 16°C

The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (3°C).

Average rainfall in September - Bol, Croatia
  • Average rainfall in September: 67mm

The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the lowest rainfall) is July (36mm).

Average rainfall days in September - Bol, Croatia
  • Average rainfall days in September: 9 days

Months with the highest number of rainy days are January, November and December (13 days).
The month with the lowest number of rainy days is July (8 days).

Average sea temperature in September - Bol, Croatia
  • Average sea temperature in September: 23.9°C

The best month for swimming (with the highest average sea temperature) is August (25°C).
Coldest months (with the lowest average sea temperature) are January and February (13.9°C).

Average daylight in September / Average sunshine in September - Bol, Croatia
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 8h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 4).

Average UV index in September - Bol, Croatia
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).