September weather forecastVentspils, Latvia
September
Weather in September
September is characterized by milder temperatures, symbolizing the beginning of autumn in Ventspils. The transition from the warmth of August to the cooler days of September becomes palpable, making it a month of gradual changes. Moreover, the number of hours of sunshine and temperature continues to decrease as October approaches. September straddles the seasons with mild grace, moulding the city’s landscapes into an artist's elysium with myriad hues and tones.Temperature
September in Ventspils, Latvia, witnesses a gentle descent in average high-temperature, descending from August's refreshing 19.9°C (67.8°F) to a still enjoyable 16.1°C (61°F). Ventspils maintains an average low-temperature of 12.5°C (54.5°F) throughout September's nights.Humidity
In September, the average relative humidity is 77%.Rainfall
In Ventspils, during September, the rain falls for 16 days and regularly aggregates up to 55mm (2.17") of precipitation. In Ventspils, during the entire year, the rain falls for 171.4 days and collects up to 565mm (22.24") of precipitation.Snowfall
June through September are months without snowfall.Sea temperature
In Ventspils, the average seawater temperature in September is 16.5°C (61.7°F).Note: Swimming in 16.5°C (61.7°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Daylight
In Ventspils, the average length of the day in September is 12h and 47min.On the first day of the month, sunrise is at 06:36 and sunset at 20:30. On the last day of September, sunrise is at 07:36 and sunset at 19:10 EEST.
Sunshine
The average sunshine in September is 7.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 4 transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ventspils, Latvia
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (20°C).
The month with the lowest average high temperature is February (0.4°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is February (-2.1°C).
Average pressure in September
Ventspils, Latvia
- Average pressure in September: 1014.7mbar
The month with the highest atmospheric pressure is May (1015.5mbar).
The month with the lowest atmospheric pressure is December (1009.9mbar).
Average wind speed in September
Ventspils, Latvia
- Average wind speed in September: 20.8km/h
The windiest month (with the highest average wind speed) is December (25.5km/h).
The calmest month (with the lowest average wind speed) is May (16.9km/h).
Average humidity in September
Ventspils, Latvia
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are May, June and August (75%).
Average rainfall in September
Ventspils, Latvia
- Average rainfall in September: 55mm
The wettest months (with the highest rainfall) are July and October (67mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Ventspils, Latvia
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is February (9 days).
Average snowfall in September
Ventspils, Latvia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ventspils, Latvia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Ventspils, Latvia
- Average sea temperature in September: 16.5°C
The best month for swimming (with the highest average sea temperature) is August (18.9°C).
The coldest month (with the lowest average sea temperature) is March (1.2°C).
Average daylight in September /
Average sunshine in September
Ventspils, Latvia
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 54min).
The month with the shortest days is December (Average daylight: 6h and 48min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).
Average sunshine days in September
Ventspils, Latvia
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is May (15.7 days).
The month with the least sunshine days is December (4.4 days).
Average UV index in September
Ventspils, Latvia
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Ventspils, Latvia
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 77).
The months with the least cloud cover are June and August (Cloud cover 34).
Average visibility in September
Ventspils, Latvia
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The month with the lowest visibility is January (8km).
