Hafnarfjördur
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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.

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).

Hafnarfjördur Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Hafnarfjördur - and find the best time to visit.

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

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

Historical weather records 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.

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).

Best Places in Iceland in April

Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in April →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

Hafnarfjördur 3-Day Forecast

More climate data for Hafnarfjördur

Popular in April

Where to go in April - average daytime high across popular destinations.

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