Keflavík, Iceland — Weather in June 2026

Monthly climate averages for Keflavík, Iceland. Based on 10-year ERA5 reanalysis data.

Cfc Subpolar Oceanic
5 /10
Fair

June is a fair month in Keflavík

Climate Overview

Keflavík, Iceland in June has mild conditions, with highs averaging 10.5°C (51°F) and noticeably cooler mornings. Rain falls on about 14 days this month. Winds are noticeable. Sea temperature stays cool at 9.8°C (50°F).

This month falls at the beginning of Summer.

Temperatures remain fairly steady throughout June, with daily highs around 10°C (50°F).

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

Expect around 12.4h of sunshine at the start of June, decreasing to 10.3h by the end.

Wind speeds ease off through the month, from 27 km/h (17 mph) to 24 km/h (15 mph).

The warmest days tend to fall around the 29th, averaging 11.4°C (53°F).

Compared to May, this month is about 2°C warmer with 2 fewer rainy days.

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Monthly June Averages

Temperature
11°C / 8°C
Feels Like
7°C / 4°C
Rain
14 days · 76 mm
Sunshine
10.9h / day
Humidity
81% — Very Humid
Wind
25 km/h
Wind Direction
W (263°)
Gusts
40 km/h
Daylight
20.7 h
Cloud Cover
78%
Clear Sky Days
0.9
UV Index
4.2 — Moderate
Sea Temperature
10°C
Dew Point
6°C — Dry
Moon Phase
New Moon · 0%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

16°C 13°C 10°C 7°C 4°C 1°C 151015202530
HighLow

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 151015202530
Rainfall

Daily Sunshine

0h 4h 8h 12h 16h 151015202530
Sunshine

Daily Wind Speed

0 7 14 21 28 35 151015202530
Wind Speed
Sun Position
Sunrise 03:05
Daylight 20.9h
Sunset 23:59

What to Expect

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 June have stayed close to the long-run average.

Compare Months

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

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

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

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketWaterproof shoes

Frequently Asked Questions

June is typically fair for visiting Keflavík, with average highs of 11°C (51°F) and around 14 rainy days. Keflavík, Iceland in June has mild conditions, with highs averaging 10.5°C (51°F) and noticeably cooler mornings. Rain f
Keflavík typically sees around 14 rainy days in June with 76 mm (3 in) of total rainfall. Pack a waterproof jacket.
Nights in Keflavík during June are cool at around 8°C (46°F). Bring a jacket or sweater for evenings.
With highs of 11°C (51°F) and lows of 8°C (46°F) in June, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. Comfortable walking shoes are essential.
Yes, June offers some of the best weather conditions in Keflavík with comfortable temperatures and lower chances of rain.
The average UV index in Keflavík during June is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.
Keflavík gets approximately 21 hours of daylight per day in June, with around 11 hours of sunshine.
Snow is uncommon in Keflavík during June based on 10-year climate averages.

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