Hafnarfjörður, Iceland experiences average highs of 7°C (45°F) and lows of 2°C (36°F) throughout the year. Rainfall is frequent, averaging about 16 rainy days per month. Average highs have stayed broadly stable across the available records.
Hafnarfjörður, Iceland Weather & Climate 2026
Monthly climate averages for Hafnarfjörður, Iceland. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Apr–Dec 
Wetter season: Jan–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
2.7/10
Best: June, July, August
UV Index
2
Low
Temperature 7°C / 2°C
Feels Like 3°C / -2°C
Rainy Days 16
Rainfall 110 mm
Sunshine 6 h
Humidity 82%
Wind Speed 22 km/h
Dew Point 2°C
Snow Days 10 days
Frost Days 15 days
Hottest Month
15°C
July
Avg Low9°C
Rain14days
Coldest Month
-4°C
January
Avg High1°C
Rain18days
Driest Month
14days
July
Avg High15°C
Avg Low9°C
Windiest Month
27 km/h
February (Gusts 57)
Sea Temperature
3°C – 12°C
Warmest water: August (
12.4°C
)
Worst Time to Visit
Consider avoiding January, February, March, April due to very cold temperatures, heavy rainfall.
Sun Position
Sunrise 03:01
Daylight 21h
Sunset 23:58
Live conditions—
Hafnarfjörður on the map · live conditions
Hafnarfjörður, Iceland
- Continent
- Europe
- Country
- Iceland
- City
- Hafnarfjörður
- Population
- 30K
- Coordinates
- 64.07°, -21.94°
Seasonal Breakdown
Spring
Mar–May
Avg High 7°C
Avg Low 1°C
Rain 17 days/mo
Summer
Jun–Aug
Avg High 14°C
Avg Low 8°C
Rain 14 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 7°C
Avg Low 3°C
Rain 16 days/mo
Winter
Dec–Feb
Avg High 1°C
Avg Low -4°C
Rain 17 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 1°C / -4°C . Feb: 2°C / -3°C . Mar: 3°C / -2°C . Apr: 7°C / 1°C . May: 10°C / 4°C . Jun: 13°C / 7°C . Jul: 15°C / 9°C . Aug: 14°C / 9°C . Sep: 11°C / 6°C . Oct: 7°C / 3°C . Nov: 3°C / -1°C . Dec: 1°C / -3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 127 mm. Feb: 131 mm. Mar: 118 mm. Apr: 109 mm. May: 109 mm. Jun: 86 mm. Jul: 73 mm. Aug: 90 mm. Sep: 133 mm. Oct: 127 mm. Nov: 102 mm. Dec: 110 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 82%. Feb: 83%. Mar: 79%. Apr: 79%. May: 78%. Jun: 79%. Jul: 81%. Aug: 82%. Sep: 85%. Oct: 86%. Nov: 85%. Dec: 83%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 25 km/h . Feb: 27 km/h . Mar: 23 km/h . Apr: 22 km/h . May: 21 km/h . Jun: 19 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 22 km/h . Oct: 22 km/h . Nov: 22 km/h . Dec: 23 km/h .
Sunshine
Sunshine
Sunshine: Jan: 1h. Feb: 4h. Mar: 7h. Apr: 9h. May: 11h. Jun: 11h. Jul: 11h. Aug: 10h. Sep: 7h. Oct: 5h. Nov: 2h. Dec: 1h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 3°C . Feb: 3°C . Mar: 4°C . Apr: 5°C . May: 8°C . Jun: 10°C . Jul: 12°C . Aug: 12°C . Sep: 11°C . Oct: 8°C . Nov: 6°C . Dec: 4°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 0. Feb: UV 1. Mar: UV 2. Apr: UV 3. May: UV 4. Jun: UV 4. Jul: UV 4. Aug: UV 3. Sep: UV 2. Oct: UV 1. Nov: UV 0. Dec: UV 0.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 17 days. Feb: 16 days. Mar: 15 days. Apr: 7 days. May: 3 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 4 days. Nov: 8 days. Dec: 13 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 15°C | Jul · 15°C |
| Coldest month | Jan 2025 · -7°C | Jan · -4°C |
| Wettest month | Sep 2025 · 163 mm | Sep · 133 mm |
| Windiest month | Feb 2025 · 30 km/h | Feb · 27 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Wet April
Poor May
Wet June best
Fair July best
Fair August best
Fair September
Wet October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -4°C | -4°C / -10°C | 18days (127 mm) Wet | 1.4h Poor | 82% Humid | 0.2 Low | Wet | View Details |
| February | 2°C / -3°C | -3°C / -8°C | 18days (131 mm) Wet | 3.5h Poor | 83% Humid | 0.8 Low | Wet | View Details |
| March | 3°C / -2°C | -1°C / -7°C | 18days (118 mm) Wet | 6.6h Fair | 79% Humid | 1.8 Low | Wet | View Details |
| April | 7°C / 1°C | 3°C / -3°C | 15days (109 mm) Wet | 8.7h Good | 79% Humid | 3.2 Moderate | Poor | View Details |
| May | 10°C / 4°C | 7°C / 1°C | 18days (109 mm) Wet | 10.9h Excellent | 78% Humid | 3.9 Moderate | Wet | View Details |
| June best | 13°C / 7°C | 10°C / 4°C | 15days (86 mm) Wet | 10.8h Excellent | 79% Humid | 4.1 Moderate | Fair | View Details |
| July best | 15°C / 9°C | 13°C / 7°C | 14days (73 mm) Wet | 10.5h Excellent | 81% Humid | 3.9 Moderate | Fair | View Details |
| August best | 14°C / 9°C | 12°C / 6°C | 14days (90 mm) Wet | 9.5h Good | 82% Humid | 3.2 Moderate | Fair | View Details |
| September | 11°C / 6°C | 8°C / 2°C | 18days (133 mm) Wet | 7.2h Good | 85% Humid | 2.2 Moderate | Wet | View Details |
| October | 7°C / 3°C | 3°C / -2°C | 17days (127 mm) Wet | 4.5h Fair | 86% Very Muggy | 1 Low | Poor | View Details |
| November | 3°C / -1°C | -1°C / -5°C | 14days (102 mm) Wet | 1.9h Poor | 85% Humid | 0.4 Low | Poor | View Details |
| December | 1°C / -3°C | -3°C / -8°C | 16days (110 mm) Wet | 1.1h Poor | 83% Humid | 0.1 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Hafnarfjörður are June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Hafnarfjörður, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Hafnarfjörður is July, with average daytime highs of 15°C (58°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Hafnarfjörður is January, with average overnight lows of -4°C (24°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Hafnarfjörður is September, averaging 133mm of precipitation across 18 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Hafnarfjörður runs through January, February, March, May, with the heaviest rainfall in January. Based on 10-year averages for Hafnarfjörður.
Hafnarfjörður receives approximately 77 sunshine hours per year. The sunniest month is May with around 11 hours. Based on climate data for Hafnarfjörður.
The least favorable months to visit Hafnarfjörður are January, February, March, April, primarily due to very cold temperatures, heavy rainfall. For the best conditions, consider June, July, August instead.
The annual average UV index in Hafnarfjörður is 2, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Hafnarfjörður is 82%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Sea temperatures in Summer average 7°C (45°F), which most swimmers will find too cold without a wetsuit.
Yes, Hafnarfjörður receives snow. Months with snowfall average 10 snow days and 20 cm (8 in) of accumulation, with about 15 frost days during winter.
Average wind speeds in Hafnarfjörður are 22 km/h (14 mph). The windiest month is February with peak winds reaching 27 km/h (16 mph) (gusts up to 57 km/h / 35 mph).
Hafnarfjörður averages 1 clear-sky days per month with overall cloud cover around 77%. The clearest skies occur in November.
The annual average dew point in Hafnarfjörður is 2°C (36°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Hafnarfjörður has a Subpolar Oceanic climate, classified as Cfc under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Hafnarfjörður ranges from -2°C (28°F) to 3°C (37°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
June is not the best time to visit Hafnarfjörður, with a climate score of 4.9/10. Consider visiting during June, July, August instead for better conditions.
For June in Hafnarfjörður, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. With average highs of 13°C (55°F) and 15 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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