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Keflavík Weather in April
April in Keflavík brings low temperatures around 7°C (45°F) during the day, dropping to 2°C (36°F) at night, with quite a bit of rainfall expected, averaging around 102 mm (4 in) for the month.
Rainfall in Keflavík in April
Rain is expected on roughly 18 days, totalling around 102 mm (4 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Keflavík in April
April in Keflavík sees highs of 7°C (45°F) and lows of 2°C (36°F) overnight. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With lows around 2°C (36°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Keflavík in April
The month brings about 165 hours of sunlight, offering a comfortable mix of sun and overcast.April in Keflavík can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Keflavík Temperature in April
Min Temperature
2°C (36°F)
Max Temperature
7°C (45°F)
Chance of Rain
61%
Precipitation
102 mm (4 in)
Rainy days
18 days
Humidity
78% *
Sunshine
165 hours *
Percentage Sunshine
36% *
* Data from: Reykjavík, Iceland (34 KM, 21 Miles).
Keflavík Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Keflavík - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Keflavík 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 2°C (36°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 Keflavík in April
Browse day-by-day weather records for Keflavík spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Keflavík historical weather extremes in April
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Keflavík.
- The hottest April day on record in Keflavík reached 15°C (59°F) (April 19, 2005).
- Keflavík experienced its chilliest April day on April 11, 1988, reaching only -4°C (25°F).
- The lowest overnight temperature recorded in April was -11°C (12°F) (April 3, 1990).
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 Keflavík in April
Dress warmly and in layers for your trip to Keflavík 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. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Keflavík in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling4/10 -
Walking4/10 -
Camping3/10 -
Outdoor sports4/10
Keflavík 3-Day Forecast
More climate data for Keflavík
Temperature Rainfall Sunshine Humidity
See the full Keflavík climate overview or explore weather in Iceland.
Popular in April
Where to go in April - average daytime high across popular destinations.
Hella
8°C (46°F) Reykjavík
7°C (45°F) Kópavogur7°C (45°F) Selfoss8°C (46°F) Keflavík7°C (45°F) Höfn
5°C (41°F) Egilsstadir3°C (37°F) Akureyri3°C (37°F) Bucket list
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