September weather forecast
Neum, Bosnia and Herzegovina

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Weather in September

Neum's weather turns a new page in September as the transition from summer to autumn begins. It has a distinctly mild and comfortable climate when compared to the harsh temperatures of August. The temperature now hovers around a high of 23.7°C (74.7°F) and a minimum of 14.7°C (58.5°F). The city also witnesses an increase in rainfall, setting the stage for the wet season in October.

Temperature

September's onset brings a reduction in the average high-temperature, from 29.4°C (84.9°F) in August to a still warm 23.7°C (74.7°F). In the month of September, Neum experiences an average low-temperature of 14.7°C (58.5°F).

Humidity

In Neum, the average relative humidity in September is 65%.

Rainfall

In Neum, during September, the rain falls for 10.5 days and regularly aggregates up to 52mm (2.05") of precipitation. In Neum, during the entire year, the rain falls for 148.3 days and collects up to 873mm (34.37") of precipitation.

Snowfall

May through November are months without snowfall.

Sea temperature

In Neum, the average seawater temperature in September is 24.3°C (75.7°F).
Note: Your comfort in 24.3°C (75.7°F) waters hinges on your relationship with the cold, today's sunny disposition, wind patterns, and the air's temperature. For context, Olympic swimmers are no strangers to waters of 25°C (77°F) to 28°C (82.4°F).

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of September, sunrise is at 06:14 and sunset at 19:24. On the last day of the month, sunrise is at 06:46 and sunset at 18:32 CEST.

Sunshine

In Neum, the average sunshine in September is 10.3h.

UV index

In September, the average daily maximum UV index in Neum is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during September leads to these instructions:
Take necessary precautions - Defending against sun damage is advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note! Reflective surfaces like sand and water heighten the UV radiation levels.

Frequently asked questions

What is the temperature in September?

September temperatures vary between a high-temperature of 23.7°C (74.7°F) and a low-temperature of 14.7°C (58.5°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 31°C (87.8°F).

What is the average humidity in September?

In September, the average relative humidity is 65%.

How much does it rain in September?

In September, the rain falls for 10.5 days. Throughout September, 52mm (2.05") of precipitation is accumulated.

When it does not snow?

May through November are months without snowfall.

What is the sea temperature in September?

In September, the average sea temperature is 24.3°C (75.7°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.3°C (75.7°F) water.

How many hours of daylight does Neum have in September?

In September, the average day length is 12h and 29min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 06:14 and sunset at 19:24. On the last day of the month, sunrise is at 06:46 and sunset at 18:32 CEST.

How many hours of sunshine does Neum have in September?

The average sunshine duration in September is 10.3h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Neum, Bosnia and Herzegovina

Average temperature in September - Neum, Bosnia and Herzegovina
  • Average high temperature in September: 23.7°C

The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (7.5°C).

  • Average low temperature in September: 14.7°C

The month with the highest average low temperature is August (18.5°C).
The coldest month (with the lowest average low temperature) is January (2°C).

Average pressure in September
Neum, Bosnia and Herzegovina

Average pressure in September - Neum, Bosnia and Herzegovina
  • Average pressure in September: 1016.4mbar

The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is July (1014.1mbar).

Average wind speed in September
Neum, Bosnia and Herzegovina

Average wind speed in September - Neum, Bosnia and Herzegovina
  • Average wind speed in September: 9.8km/h

The windiest month (with the highest average wind speed) is February (12.4km/h).
The calmest month (with the lowest average wind speed) is August (8.6km/h).

Average humidity in September
Neum, Bosnia and Herzegovina

Average humidity in September - Neum, Bosnia and Herzegovina
  • Average humidity in September: 65%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (58%).

Average rainfall in September
Neum, Bosnia and Herzegovina

Average rainfall in September - Neum, Bosnia and Herzegovina
  • Average rainfall in September: 52mm

The wettest month (with the highest rainfall) is November (143mm).
The driest month (with the least rainfall) is August (23mm).

Average rainfall days in September
Neum, Bosnia and Herzegovina

Average rainfall days in September - Neum, Bosnia and Herzegovina
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is August (6.3 days).

Average snowfall in September
Neum, Bosnia and Herzegovina

Average snowfall in September - Neum, Bosnia and Herzegovina
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (16mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Neum, Bosnia and Herzegovina

Average snowfall days in September - Neum, Bosnia and Herzegovina
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

Average sea temperature in September
Neum, Bosnia and Herzegovina

Average sea temperature in September - Neum, Bosnia and Herzegovina
  • Average sea temperature in September: 24.3°C

The best months for swimming (with the highest average sea temperature) are July and August (25.3°C).
The coldest month (with the lowest average sea temperature) is January (14°C).

Average daylight in September /
Average sunshine in September
Neum, Bosnia and Herzegovina

Average daylight in September / Average sunshine in September - Neum, Bosnia and Herzegovina
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 10h and 2min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

Average sunshine days in September
Neum, Bosnia and Herzegovina

Average sunshine days in September - Neum, Bosnia and Herzegovina
  • Average sunshine days in September: 18 days

The month with the most sunshine days is August (20.6 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in September
Neum, Bosnia and Herzegovina

Average UV index in September - Neum, Bosnia and Herzegovina
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Neum, Bosnia and Herzegovina

Average cloud cover in September - Neum, Bosnia and Herzegovina
  • Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in September
Neum, Bosnia and Herzegovina

Average visibility in September - Neum, Bosnia and Herzegovina
  • Average visibility in September: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).

Neum, Bosnia and Herzegovina

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