September weather forecastHaapsalu, Estonia

September

Weather in September

September depicts a slight decline in temperatures, signaling the dawn of autumn in Haapsalu. Autumn’s ushering hand brings the average high temperatures down to a pleasant 15°C (59°F). Along with the slight temperature drop, there is noticeable contraction in daylight hours, further affirming the advent of fall. With mellow sunlight, crisp air, and rain moderating the landscape's vibrancy, it is the perfect month to experience the changing colors of the season. The transition of seasons offers a chance to experience a balanced blend of weather conditions.

Temperature

September in Haapsalu signifies a minor drop in average high-temperature, transitioning from an enjoyable 19°C (66.2°F) in August to a still refreshing 15°C (59°F). Nighttime temperature lowers to an average of 9°C (48.2°F) in September.

Rainfall

The month with the most rainfall in Haapsalu is September, when the rain falls for 16 days and typically aggregates up to 70mm (2.76") of precipitation.

Sea temperature

In Haapsalu, in September, the average water temperature is 14°C (57.2°F).
Note: It is life-risking to swim in 14°C (57.2°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.

Daylight

The average length of the day in September is 12h and 50min.
On the first day of September, sunrise is at 06:24 and sunset at 20:26. On the last day of the month, sunrise is at 07:29 and sunset at 19:01 EEST.

Sunshine

The average sunshine in September in Haapsalu, Estonia, is 5h.

UV index

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 3 in September translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Updated: Jan 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in September, in Haapsalu, is 15°C (59°F), while the average low-temperature is 9°C (48.2°F).

The month with the most rainfall in Haapsalu is September, when the rain falls for 16 days and typically aggregates up to 70mm (2.76") of precipitation.

In Haapsalu, during September, the rain falls for 16 days and regularly aggregates up to 70mm (2.76") of precipitation.

In September, the average sea temperature is 14°C (57.2°F). Swimming in 14°C (57.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

The average day length in September in Haapsalu, Estonia, is 12h and 50min.

On the first day of September, sunrise is at 06:24 and sunset at 20:26. On the last day of the month, sunrise is at 07:29 and sunset at 19:01 EEST.

The average sunshine duration in September is 5h.

The average daily maximum UV index in September in Haapsalu is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

19°C

15°C

10°C

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in September
Haapsalu, Estonia

Average high temperature in September: 15°C

The warmest month (with the highest average high temperature) is July (20°C).
The months with the lowest average high temperature are January and February (-2°C).

Average low temperature in September: 9°C

The months with the highest average low temperature are July and August (13°C).
The coldest month (with the lowest average low temperature) is February (-8°C).

Average rainfall in September
Haapsalu, Estonia

Average rainfall in September: 70mm

The wettest month (with the highest rainfall) is September (70mm).
The driest months (with the least rainfall) are February and March (27mm).

Average rainfall days in September
Haapsalu, Estonia

Average rainfall days in September: 16 days

The month with the highest number of rainy days is December (20 days).
The months with the least rainy days are May and June (10 days).

Average sea temperature in September
Haapsalu, Estonia

Average sea temperature in September: 14°C

The best month for swimming (with the highest average sea temperature) is August (17°C).
The coldest months (with the lowest average sea temperature) are February and March (1°C).

Average daylight in September /
Average sunshine in September
Haapsalu, Estonia

Average daylight in September: 12h and 48min

The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).

Average sunshine in September: 5h

The month with the most sunshine is June (Average sunshine: 10h).
The months with the least sunshine are January, November and December (Average sunshine: 1h).

Average UV index in September
Haapsalu, Estonia

Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 0).