Mosfellsbær Weather in April
April in Mosfellsbær averages 7°C (45°F) during the day and 0°C (32°F) at night. Quite a bit of rainfall is typical this month, with around 111 mm (4.4 in) on average. An umbrella is a good idea.
Rainfall in Mosfellsbær in April
Typically, about 18 days will experience rainfall, with an average of 111 mm (4.4 in) for the month. 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 Mosfellsbær in April
In April, Mosfellsbær sees low temperatures, with highs of 7°C (45°F). Nights drop to around 0°C (32°F). Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With overnight lows of 0°C (32°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Mosfellsbær in April
The city usually sees around 165 hours of sunlight, indicating a moderately sunny period.
Wind Speed in Mosfellsbær 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 too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.April in Mosfellsbær 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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Mosfellsbær's climate page.
Mosfellsbær Temperature in April
Min Temperature
0°C (32°F)
Max Temperature
7°C (45°F)
Water Temperature
7°C (45°F) *
Chance of Rain
59%
Precipitation
111 mm (4.4 in)
Rainy days
18 days
Humidity
78% *
Windspeed
6 m/s (12 knots) *
Sunshine
165 hours *
Percentage Sunshine
36% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mosfellsbær typically stay consistent throughout April, with daily highs averaging around 7°C (45°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 for Mosfellsbær in April
Browse day-by-day weather records for Mosfellsbær spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mosfellsbær historical weather extremes in April
Based on 50 years of weather observations in Mosfellsbær between 1976 and 2026, these are the recorded extremes.
- Mosfellsbær recorded its highest April temperature of 15°C (59°F) on April 30, 2019.
- Mosfellsbær experienced its chilliest April day on April 5, 2021, reaching only -4°C (25°F).
- The lowest overnight temperature recorded in April was -11°C (12°F) (April 3, 1990).
- The heaviest April precipitation occurred on April 3, 2022, when 36 mm (1.4 in) of precipitation fell.
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
What to Wear in Mosfellsbær in April
We recommend to layer up for chilly conditions in Mosfellsbær in April. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. 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 Mosfellsbær in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Mosfellsbær's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Mosfellsbær climate overview or explore weather in Iceland.
