September weather forecastRoja, Latvia
September
Weather in September
September, the first month of the autumn in Roja, is still a comfortable month, with an average temperature ranging between max 16.3°C (61.3°F) and min 12.1°C (53.8°F).Temperature
In Roja, the average high-temperature in September slightly decreases from a pleasant 20.3°C (68.5°F) in August to a refreshing 16.3°C (61.3°F). With a barely noticeable fluctuation in temperature, Roja reaches an average low of 12.1°C (53.8°F) during the September nights.Humidity
In September, the average relative humidity is 77%.Rainfall
In Roja, in September, during 12.2 rainfall days, 22mm (0.87") of precipitation is typically accumulated. In Roja, during the entire year, the rain falls for 139.3 days and collects up to 295mm (11.61") of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Roja, the average length of the day in September is 12h and 47min.On the first day of September in Roja, sunrise is at 06:31 and sunset at 20:26. On the last day of the month, sunrise is at 07:31 and sunset at 19:05 EEST.
Sunshine
The average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Make use of precautions - Suggestions to resist sunburn are communicated. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Roja, Latvia
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The months with the lowest average high temperature are January and February (-0.3°C).
- Average low temperature in September: 12.1°C
The months with the highest average low temperature are July and August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (-3°C).
Average pressure in September
Roja, Latvia
- Average pressure in September: 1015mbar
The month with the highest atmospheric pressure is October (1015.6mbar).
The month with the lowest atmospheric pressure is December (1010.5mbar).
Average wind speed in September
Roja, Latvia
- Average wind speed in September: 20km/h
The windiest month (with the highest average wind speed) is December (24.4km/h).
The calmest month (with the lowest average wind speed) is May (15.5km/h).
Average humidity in September
Roja, Latvia
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are May, June, July and August (75%).
Average rainfall in September
Roja, Latvia
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (43mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Roja, Latvia
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (7 days).
Average snowfall in September
Roja, Latvia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (45mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Roja, Latvia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Roja, 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 42min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 12min).
Average sunshine days in September
Roja, Latvia
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is May (16.5 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Roja, Latvia
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in September
Roja, Latvia
- Average cloud cover in September: 43
The months with the most cloud cover are January and December (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Roja, Latvia
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
