Loo, Estonia — Weather in September 2026

Climate Overview

Loo, Estonia in September has mild conditions, with highs averaging 15.9°C (61°F) and noticeably cooler mornings. Rain falls on about 12 days this month. Sea temperature stays cool at 17.4°C (63°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 18°C (64°F) at the start to 14°C (57°F) by month's end.

Rainfall is heaviest during the middle of the month, while the first third tends to be drier.

Expect around 9.1h of sunshine at the start of September, decreasing to 6.7h by the end.

The warmest days tend to fall around the 9th, averaging 18.6°C (65°F).

Compared to August, this month is about 4°C cooler with 2 fewer rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

16°C / 11°C

Feels Like

14°C / 8°C

Rain

12 days · 69 mm

Sunshine

8h / day

Humidity

81% — Very Humid

Wind

21 km/h

Wind Direction

SSW (204°)

Gusts

38 km/h

Daylight

12.8 h

Cloud Cover

67%

Clear Sky Days

1.7

UV Index

3.2 — Moderate

Sea Temperature

17°C

Dew Point

10°C — Comfortable

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:49

Daylight 12.9h

Sunset 19:45

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

3 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-1°C / -5°C	-6°C / -10°C	14days (52 mm) Wet	1.3h Poor	88% Very Muggy	0.5 Low	Poor	View Details
February	0°C / -4°C	-5°C / -10°C	11days (43 mm) Wet	3.5h Poor	86% Very Muggy	1.2 Low	Poor	View Details
March	3°C / -3°C	-1°C / -8°C	9days (34 mm) Wet	6.7h Fair	80% Humid	2.3 Moderate	Poor	View Details
April	9°C / 1°C	5°C / -4°C	10days (41 mm) Wet	10.1h Excellent	74% Muggy	3.5 Moderate	Poor	View Details
May	15°C / 6°C	13°C / 3°C	7days (39 mm) Good	13h Excellent	67% Muggy	5.3 High	Fair	View Details
June best	20°C / 12°C	19°C / 10°C	10days (68 mm) Wet	13.9h Excellent	70% Muggy	5.5 High	Good	View Details
July best	21°C / 15°C	21°C / 14°C	13days (77 mm) Wet	13h Excellent	75% Muggy	5.3 High	Excellent	View Details
August best	20°C / 14°C	19°C / 13°C	14days (95 mm) Wet	10.8h Excellent	79% Humid	4.5 Moderate	Excellent	View Details
September best	16°C / 11°C	14°C / 8°C	12days (69 mm) Wet	8h Good	81% Humid	3.2 Moderate	Good	View Details
October	9°C / 5°C	6°C / 1°C	14days (74 mm) Wet	4.5h Fair	85% Humid	1.5 Low	Poor	View Details
November	4°C / 1°C	0°C / -3°C	14days (55 mm) Wet	1.8h Poor	88% Very Muggy	0.6 Low	Poor	View Details
December	1°C / -2°C	-4°C / -8°C	12days (49 mm) Wet	0.9h Poor	88% Very Muggy	0.3 Low	Poor	View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Loo?

September is typically good for visiting Loo, with average highs of 16°C (61°F) and around 12 rainy days. Loo, Estonia in September has mild conditions, with highs averaging 15.9°C (61°F) and noticeably cooler mornings. Rain f

Does it rain a lot in Loo in September?

Loo typically sees around 12 rainy days in September with 69 mm (2.7 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Loo in September?

Nights in Loo during September are cool at around 11°C (51°F). Bring a jacket or sweater for evenings.

What should I pack for Loo in September?

With highs of 16°C (61°F) and lows of 11°C (51°F) in September, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Loo?

Yes, September offers some of the best weather conditions in Loo with comfortable temperatures and lower chances of rain.

What is the UV index in Loo in September?

The average UV index in Loo during September is 3 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Loo in September?

Loo gets approximately 13 hours of daylight per day in September, with around 8 hours of sunshine.

Does it snow in Loo in September?

Snow is uncommon in Loo during September based on 10-year climate averages.

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