Suur-Rootsi Weather in September
With daytime temperatures of 17°C (63°F) and nighttime lows of 12°C (54°F), September in Suur-Rootsi brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 61 mm (2.4 in) falls on average.
Rainfall in Suur-Rootsi in September
You can expect rain on around 16 days based on historical patterns, with 61 mm (2.4 in) average for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Suur-Rootsi in September
Daytime highs in Suur-Rootsi in September reach 17°C (63°F), with nights around 12°C (54°F). The difference between afternoon and evening temperatures is usually noticeable. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Suur-Rootsi in September
The city usually sees around 144 hours of sunlight, indicating a moderately sunny period.If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Estonia, check out our Suur-Rootsi's climate page.
Suur-Rootsi Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
17°C (63°F)
Chance of Rain
54%
Precipitation
61 mm (2.4 in)
Rainy days
16 days
Humidity
82% *
Sunshine
144 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Suur-Rootsi typically drop from around 18°C (64°F) at the start of September to approximately 13°C (55°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 12°C (54°F).
Average temperatures in September
Historical weather for Suur-Rootsi in September
Browse day-by-day weather records for Suur-Rootsi spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Suur-Rootsi historical weather extremes in September
Based on 49 years of weather observations in Suur-Rootsi between 1976 and 2025, these are the recorded extremes.
- On September 4, 2024, temperatures climbed to 26°C (79°F), marking the warmest September day on record.
- On September 27, 1986, Suur-Rootsi saw its coldest September day with temperatures maxing out at 6°C (43°F).
- Nighttime temperatures dropped to -2°C (28°F) on September 28, 1986, marking the coldest September night on record.
Best Places in Estonia in September
Find out more about the weather in Estonia and which places have the best travel conditions in this month. See all of Estonia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Suur-Rootsi in September
For Suur-Rootsi in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Suur-Rootsi in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Estonia, check out our Suur-Rootsi's climate page.
Temperature Rainfall Sunshine Humidity
See the full Suur-Rootsi climate overview or explore weather in Estonia.
