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Hiiumaa Island in September 2026: weather, temperatures and activities

Do you want to visit Hiiumaa Island in September 2026? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether September is a good month to travel to Hiiumaa Island, Estonia.

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Is it worth visiting Hiiumaa Island in September?

Check your ideal travel criteria and see if the month of September suits your plans to go to Hiiumaa Island.
What matters most?
Hiiumaa Island in September 2026: weather, temperatures and activities

Page summary

Hiiumaa Island in September in summary
Favourable weather
Min 13°C Max 16°C 80 mm 5 day(s) 82% 43% 20°C 10.9 h/day
Best activities in September
Cultural visits and heritageNature and landscapesBoat trip and cruise
Practical guidelines
Moderate crowds 05:59 18:49
Hourly weather

Average weather in Hiiumaa Island in September 2026

Favourable weather

The weather in Hiiumaa Island in September 2026 is based on statistical data from previous years in September. This allows you to forecast the weather in September 2026. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Hiiumaa Island in September

Temperatures, precipitation and monthly trends help to better understand the climate in Hiiumaa Island in September.

Temperatures and rain in Hiiumaa Island in September

Average daily weather

Temperatures and rain day by day in September.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of September is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Hiiumaa Island in September

Seasonal normals

Seasonal normals of Hiiumaa Island in September

Check the seasonal normals in Hiiumaa Island in September and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
September
Weather data August September October
Outside temperature
Average temperature 18.4°C 14.5°C 9.0°C
Maximum temperature 19.7°C 15.6°C 10.0°C
Minimum temperature 17.2°C 13.4°C 8.0°C
Record maximum temperature 29.0°C
(2014)
22.0°C
(2018)
16.0°C
(2020)
Record low temperature 11.0°C
(2010)
6.0°C
(2021)
-3.0°C
(2014)
Number of days at +30° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Number of days at +18° 26 day(s)
(84%)
7 day(s)
(23%)
0 day(s)
(0%)
Number of days below 0° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Sea temperature
Sea temperature (average) 19.9°C 16.5°C 11.2°C
Sea temperature (minimum) 16.7°C 13.2°C 7.0°C
Sea temperature (maximum) 22.8°C 19.9°C 15.4°C
Wind
Wind speed 21 km/h 24 km/h 25 km/h
Wind temperature 17.1°C 12.0°C 4.9°C
Precipitation (rain)
Precipitation 93.7 mm 80.5 mm 83.7 mm
Number of days with precipitation 17 day(s)
(55%)
16 day(s)
(53%)
17 day(s)
(55%)
Number of days with significant precipitation (greater than 5 mm) 7 day(s)
(23%)
5 day(s)
(17%)
5 day(s)
(17%)
Record precipitation in one day 35.3 mm
(2021)
31.5 mm
(2017)
27.8 mm
(2018)
Other weather data
Humidity 77% 82% 83%
Visibility 9.6 km 9.5 km 9.1 km
Cloud cover 33% 43% 57%
UV index 5 4 3
Daily sunshine 13h 11h 6h
Sunrise and sunset
Sunrise time 04h49 05h59 07h07
Sunset time 20h17 18h49 17h23
Day length 15h28 12h50 10h16
Our opinion on the climate in September
The review of Where And When favourable weather favourable weather adverse weather
Activities and events

What to do in Hiiumaa Island in September?

Best activities in September
Cultural visits and heritageNature and landscapesBoat trip and cruise
Possible activities in September
Beach and swimmingHiking and trekkingAnimal observationWatersports
Observed weather

What was the weather like in Hiiumaa Island in September last?

Find the observed weather calendar in Hiiumaa Island in September 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Clear/Sunny
14°C17°C0.0 mm
2
Clear/Sunny
15°C19°C0.0 mm
3
Patchy rain nearby
17°C19°C0.0 mm
4
Clear/Sunny
15°C21°C0.0 mm
5
Clear/Sunny
16°C21°C0.0 mm
6
Clear/Sunny
16°C21°C0.0 mm
7
Partly Cloudy
17°C20°C1.2 mm
8
Clear/Sunny
17°C21°C0.0 mm
9
Clear/Sunny
16°C20°C0.0 mm
10
Clear/Sunny
17°C20°C0.1 mm
11
Clear/Sunny
17°C20°C0.2 mm
12
Light drizzle
15°C18°C2.9 mm
13
Patchy rain nearby
14°C18°C0.7 mm
14
Patchy rain nearby
14°C17°C1.8 mm
15
Patchy rain nearby
14°C17°C3.1 mm
16
Patchy rain nearby
14°C18°C1.8 mm
17
Light rain shower
14°C16°C4.1 mm
18
Patchy rain nearby
14°C16°C0.5 mm
19
Patchy rain nearby
14°C16°C0.3 mm
20
Partly Cloudy
17°C18°C0.0 mm
21
Clear/Sunny
16°C20°C0.1 mm
22
Light rain shower
13°C15°C0.7 mm
23
Partly Cloudy
10°C13°C0.4 mm
24
Patchy rain nearby
10°C12°C1.0 mm
25
Patchy rain nearby
10°C15°C0.1 mm
26
Clear/Sunny
12°C15°C0.0 mm
27
Partly Cloudy
12°C14°C0.0 mm
28
Clear/Sunny
11°C14°C0.0 mm
29
Clear/Sunny
9°C11°C0.0 mm
30
Clear/Sunny
8°C11°C0.0 mm
Nearby

Where to go near Hiiumaa Island in September?

Compare cities and destinations near Hiiumaa Island in September to find another travel stop, a nearby alternative or a logical continuation of your stay in Hiiumaa Island.

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Every month

Best time to visit Hiiumaa Island month by month

Compare the weather in Hiiumaa Island across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Hiiumaa Island in September: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

Yes, it’s a good time. Conditions are favorable in Hiiumaa Island in September, which places this month 4th out of 12.

Expect an average of 16°C during the day and 13°C at night, with about 80 mm of precipitation spread over 5 rainy days.

The sea is only 17°C on average in September. Swimming is still possible, but it will be cool.

Expect about 10.9 hours of sunshine per day on average for this month.

This month is particularly suited to these activities: Cultural visits and heritage, Nature and landscapes and Boat trip and cruise. These are the ones for which the conditions on site are most favourable.

No: this month is in Moderate crowds, with a visitor index of 30/100. It is one of the quietest periods of the year.

The most favorable months in Hiiumaa Island are: June, July, August and September. You are therefore already in one of the best times of the year; shifting your plans would not gain you much in terms of weather.
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