Keflavík, Iceland — Weather in April 2027

Climate Overview

Keflavík, Iceland in April has cold conditions, with highs averaging around 6.3°C (43°F). Rain falls on about 15 days this month, totalling around 102 mm. Winds are noticeable. Sea temperature stays cool at 6.1°C (43°F).

This month falls at the middle of Spring. Cold conditions dominate the month.

Daily highs in April gradually rise from around 5°C (40°F) at the start to 7°C (45°F) by month's end.

April sees fairly even rainfall, totalling about 103 mm across the month.

Expect around 7.6h of sunshine at the start of April, increasing to 11.4h by the end.

Wind speeds ease off through the month, from 33 km/h (20 mph) to 25 km/h (16 mph).

The warmest days tend to fall around the 25th, averaging 7.7°C (46°F).

Compared to March, this month is about 3°C warmer with 2 fewer rainy days. Temperatures will rise further into May.

Monthly April Averages

Temperature

6°C / 3°C

Feels Like

2°C / -3°C

Rain

15 days · 102 mm

Sunshine

8.8h / day

Humidity

78% — Humid

Wind

30 km/h

Wind Direction

E (99°)

Gusts

47 km/h

Daylight

15.1 h

Cloud Cover

75%

Clear Sky Days

0.9

UV Index

3.1 — Moderate

Sea Temperature

6°C

Dew Point

1°C — Dry

Moon Phase

Waxing Gibbous · 61%

Snow Days

5 days · 9.3 cm

Frost Days

5 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:01

Daylight 15h

Sunset 21:02

What to Expect

Cold daytime highs of 6°C (43°F) mean shorter outdoor excursions with warming breaks. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

Recent yearly records for April have stayed close to the long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	3°C / 0°C	-3°C / -7°C	19days (124 mm) Wet	1.4h Poor	77% Humid	0.2 Low	Wet	View Details
February	3°C / 0°C	-3°C / -6°C	18days (122 mm) Wet	3.5h Poor	78% Humid	0.8 Low	Wet	View Details
March	4°C / 1°C	-2°C / -6°C	17days (115 mm) Wet	6.7h Fair	76% Humid	1.8 Low	Poor	View Details
April	6°C / 3°C	2°C / -3°C	15days (102 mm) Wet	8.8h Good	78% Humid	3.1 Moderate	Poor	View Details
May	9°C / 5°C	5°C / 0°C	16days (101 mm) Wet	11h Excellent	78% Humid	4 Moderate	Poor	View Details
June best	11°C / 8°C	7°C / 4°C	14days (76 mm) Wet	10.9h Excellent	81% Humid	4.2 Moderate	Fair	View Details
July best	13°C / 10°C	10°C / 6°C	13days (71 mm) Wet	10.6h Excellent	84% Humid	4.1 Moderate	Fair	View Details
August best	12°C / 10°C	10°C / 6°C	13days (87 mm) Wet	9.5h Good	83% Humid	3.3 Moderate	Fair	View Details
September	10°C / 7°C	6°C / 3°C	18days (135 mm) Wet	7.2h Good	81% Humid	2.2 Moderate	Wet	View Details
October	7°C / 5°C	3°C / -1°C	18days (134 mm) Wet	4.5h Fair	81% Humid	1 Low	Wet	View Details
November	5°C / 2°C	0°C / -4°C	16days (111 mm) Wet	1.9h Poor	79% Humid	0.4 Low	Poor	View Details
December	3°C / 0°C	-2°C / -6°C	17days (112 mm) Wet	1.1h Poor	78% Humid	0.1 Low	Poor	View Details

What to Wear

Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm coatUmbrellaWaterproof jacketWaterproof shoes

Frequently Asked Questions

Expand all

Is April a good time to visit Keflavík?

April is typically poor for visiting Keflavík, with average highs of 6°C (43°F) and around 15 rainy days. Keflavík, Iceland in April has cold conditions, with highs averaging around 6.3°C (43°F). Rain falls on about 15 days th

Does it rain a lot in Keflavík in April?

Keflavík typically sees around 15 rainy days in April with 102 mm (4 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Keflavík in April?

Yes, nights in Keflavík during April are cold, averaging 3°C (37°F). Pack warm layers and a coat for evenings.

What should I pack for Keflavík in April?

With highs of 6°C (43°F) and lows of 3°C (37°F) in April, we recommend: Warm coat, Umbrella, Waterproof jacket, Waterproof shoes. Comfortable walking shoes are essential.

Is April among the best months weather-wise in Keflavík?

April is not the most favourable month weather-wise in Keflavík. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Keflavík in April?

The average UV index in Keflavík during April is 3 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Keflavík in April?

Keflavík gets approximately 15 hours of daylight per day in April, with around 9 hours of sunshine.

Does it snow in Keflavík in April?

Yes, Keflavík typically sees around 5 snow days in April with roughly 9 cm (4 in) of snowfall.

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