Garðabær Weather in October

October in Garðabær sees daytime temperatures around 8°C (46°F) and lows of 3°C (37°F) at night. With around 123 mm (4.8 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Garðabær in October

Historically, the month has about 20 days of rain, averaging 123 mm (4.8 in) in total. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Garðabær in October

In October, Garðabær gets low temperatures, with highs of 8°C (46°F). Nights cool to around 3°C (37°F). Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Garðabær in October

This month is characterized by fewer sunny days, with about 92 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

Wind Speed in Garðabær in October

Average wind conditions reach 5 m/s (10 knots) in October. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in October

At 9°C (48°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

If you're looking for dry conditions and comfortable temperatures, October may not be the ideal month to visit Garðabær. Our weather planner can help you explore destinations with more pleasant weather conditions.

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For a detailed overview over the year and the best time to visit Iceland, check out our Garðabær's climate page.

Garðabær Temperature in October

Min Temperature 3°C (37°F)  

Max Temperature 8°C (46°F)  

Water Temperature 9°C (48°F) *  

Chance of Rain 65%  

Precipitation 123 mm (4.8 in)  

Rainy days 20 days  

Humidity 80% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 92 hours *  

Percentage Sunshine 31% *  

* Data from: Reykjavík, Iceland (5 KM, 3 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Garðabær typically drop from around 9°C (48°F) at the start of October to approximately 6°C (43°F) by the end. Nights are cold, with lows typically ranging from 1°C (34°F) to 5°C (41°F).

Average temperatures in October

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in October

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Historical weather for Garðabær in October

Browse day-by-day weather records for Garðabær spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Garðabær historical weather extremes in October

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Garðabær.

• The hottest October day on record in Garðabær reached 15°C (59°F) (October 18, 2001).
• The coldest October day was on October 31, 1996, with a maximum of -2°C (28°F).
• Garðabær registered its coldest October night on October 30, 2025, with temperatures dropping to -9°C (16°F).
• The heaviest October precipitation occurred on October 21, 1977, when 81 mm (3.2 in) of precipitation fell.

What to Wear in Garðabær in October

Dress warmly and in layers for your trip to Garðabær in October. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 9°C (48°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Garðabær in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Iceland, check out our Garðabær's climate page.

More climate data for Garðabær

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Garðabær climate overview or explore weather in Iceland.