Keflavík Weather in March
During March, Keflavík experiences low daytime temperatures of 5°C (41°F) and cooler nights around 0°C (32°F). Expect quite a bit of rainfall. Around 123 mm (4.8 in) is typical.
Rainfall in Keflavík in March
You can expect rain on roughly 20 days based on historical data, averaging 123 mm (4.8 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Keflavík in March
In March, Keflavík sees low temperatures, with highs of 5°C (41°F). Nights drop to around 0°C (32°F). Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. At 0°C (32°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Keflavík in March
The city usually sees around 111 hours of sunlight, indicating a moderately sunny period.March in Keflavík has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Keflavík's climate page.
Keflavík Temperature in March
Min Temperature
0°C (32°F)
Max Temperature
5°C (41°F)
Chance of Rain
65%
Precipitation
123 mm (4.8 in)
Rainy days
20 days
Humidity
77% *
Sunshine
111 hours *
Percentage Sunshine
29% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Keflavík typically stay consistent throughout March, with daily highs averaging around 5°C (41°F). Nights are very cold, with lows around -1°C (30°F).
Average temperatures in March
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
Historical weather for Keflavík in March
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 March
According to our 50 years of weather records for Keflavík, the following extremes were recorded between 1976 and 2026.
- The hottest March day on record in Keflavík reached 11°C (52°F) (March 20, 2005).
- Keflavík experienced its chilliest March day on March 6, 1998, reaching only -9°C (16°F).
- The lowest overnight temperature recorded in March was -13°C (9°F) (March 1, 1998).
Best Places in Iceland in March
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in March →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Keflavík 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. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Keflavík in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Keflavík's climate page.
Temperature Rainfall Sunshine Humidity
See the full Keflavík climate overview or explore weather in Iceland.
