Garðabær Weather in April

Garðabær in April sees low daytime temperatures of 8°C (46°F) and nighttime lows of 1°C (34°F). Rainfall is fairly high this month at around 111 mm (4.4 in), so pack a rain jacket to stay dry.

Rainfall in Garðabær in April

Typically, you can expect about 18 days of rain this month, with 111 mm (4.4 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Garðabær in April

Daytime highs in Garðabær in April reach 8°C (46°F), with nights around 1°C (34°F). The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. With overnight lows of 1°C (34°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Garðabær in April

With about 165 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Garðabær in April

Average wind conditions reach 6 m/s (12 knots) in April. This creates notably windy weather that is clearly felt and can influence daily activities. Keep in mind this is an average. Some days are less intense, while others can be quite gusty.

Average water temperature in April

At 7°C (45°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

If you're looking for dry conditions and comfortable temperatures, April 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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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.

Garðabær Temperature in April

Min Temperature 1°C (34°F)  

Max Temperature 8°C (46°F)  

Water Temperature 7°C (45°F) *  

Chance of Rain 60%  

Precipitation 111 mm (4.4 in)  

Rainy days 18 days  

Humidity 78% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 165 hours *  

Percentage Sunshine 36% *  

* 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 stay consistent throughout April, with daily highs averaging around 8°C (46°F). Nights are cold, with lows typically ranging from -1°C (30°F) to 3°C (37°F).

Average temperatures in April

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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 April

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Historical weather for Garðabær in April

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 April

Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Garðabær.

• On April 30, 2019, temperatures climbed to 15°C (59°F), marking the warmest April day on record.
• The lowest daytime temperature in April was -4°C (25°F), recorded on April 5, 2021.
• Nighttime temperatures dropped to -11°C (12°F) on April 3, 1990, marking the coldest April night on record.
• The wettest April day on record brought 37 mm (1.5 in) of precipitation to Garðabær (April 3, 2022).

What to Wear in Garðabær in April

Dress warmly and in layers for your trip to Garðabær in April. 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 7°C (45°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Garðabær in April

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

Swimming

5/10

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.