Hafnarfjördur Weather in April

Hafnarfjördur in April averages 8°C (46°F) during the day and 1°C (34°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Hafnarfjördur in April

Typically, about 18 days will experience rainfall, with an average of 110 mm (4.3 in) for the month. 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 Hafnarfjördur in April

In April, Hafnarfjördur sees low temperatures, with highs of 8°C (46°F). Nights drop to around 1°C (34°F). It stays cool throughout the day, so warm layers are a good idea from morning to evening. With lows around 1°C (34°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Hafnarfjördur in April

The month brings about 165 hours of sunlight, offering a comfortable mix of sun and overcast.

Wind Speed in Hafnarfjördur in April

Wind speeds average 6 m/s (12 knots) during April. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in April

At 7°C (45°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

April in Hafnarfjördur has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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

Hafnarfjördur 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 110 mm (4.3 in)  

Rainy days 18 days  

Humidity 78% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 165 hours *  

Percentage Sunshine 36% *  

* Data from: Reykjavík, Iceland (7 KM, 4 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Hafnarfjördur 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 Hafnarfjördur in April

Browse day-by-day weather records for Hafnarfjördur 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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Hafnarfjördur historical weather extremes in April

According to our 50 years of weather records for Hafnarfjördur, the following extremes were recorded between 1976 and 2026.

• Hafnarfjördur recorded its highest April temperature of 15°C (59°F) on April 30, 2019.
• The lowest daytime temperature in April was -4°C (25°F), recorded on April 5, 2021.
• The lowest overnight temperature recorded in April was -11°C (12°F) (April 3, 1990).
• The wettest April day on record brought 37 mm (1.5 in) of precipitation to Hafnarfjördur (April 3, 2022).

What to Wear in Hafnarfjördur in April

Cold weather calls for smart layering in April. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 7°C (45°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Hafnarfjördur 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 Hafnarfjördur's climate page.

More climate data for Hafnarfjördur

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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