Hafnarfjördur Weather in March

Hafnarfjördur in March sees low temperatures, with highs around 5°C (41°F) and overnight lows of -2°C (28°F). Snow/rainfall is fairly high at around 127 mm (5 in) on average, so pack waterproofs just in case.

Rainfall in Hafnarfjördur in March

Records from the past 30 years suggest around 19 days of snow/rain, with 127 mm (5 in) average for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Hafnarfjördur in March

Daytime temperatures in Hafnarfjördur reach 5°C (41°F) in March, dropping to -2°C (28°F) at night. Staying warm is the main priority this month, especially during mornings and evenings. Nights drop below freezing to -2°C (28°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. With the arrival of this cold month, make sure you're dressed in warm clothing. It's important to be ready for the chill.

Sunshine in Hafnarfjördur in March

The city usually sees around 111 hours of sunlight, indicating a moderately sunny period.

Wind Speed in Hafnarfjördur in March

Wind speeds average 6 m/s (12 knots) during March. 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 March

With water temperatures around 6°C (43°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

March in Hafnarfjördur 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.

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For a detailed overview over the year and the best time to visit Iceland, check out our Hafnarfjördur's climate page.

Hafnarfjördur Temperature in March

Min Temperature -2°C (28°F)  

Max Temperature 5°C (41°F)  

Water Temperature 6°C (43°F) *  

Chance of Rain 64%  

Precipitation 127 mm (5 in)  

Rainy days 19 days  

Humidity 77% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 111 hours *  

Percentage Sunshine 29% *  

* Data from: Reykjavík, Iceland (7 KM, 4 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Hafnarfjördur typically stay consistent throughout March, with daily highs averaging around 5°C (41°F). Nights are very cold, with lows typically ranging from -3°C (27°F) to -1°C (30°F).

Average temperatures in March

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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 March

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Historical weather for Hafnarfjördur in March

Browse day-by-day weather records for Hafnarfjördur spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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Hafnarfjördur historical weather extremes in March

According to our 50 years of weather records for Hafnarfjördur, the following extremes were recorded between 1976 and 2026.

• Hafnarfjördur recorded its highest March temperature of 13°C (55°F) on March 20, 2005.
• The lowest daytime temperature in March was -9°C (16°F), recorded on March 6, 1998.
• The lowest overnight temperature recorded in March was -14°C (7°F) (March 7, 1998).

What to Wear in Hafnarfjördur in March

Cold weather calls for smart layering in March. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 6°C (43°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Hafnarfjördur in March

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

3/10

Walking

3/10

Camping

1/10

Outdoor sports

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Iceland, check out our Hafnarfjördur's climate page.

More climate data for Hafnarfjördur

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Hafnarfjördur climate overview or explore weather in Iceland.