Hafnarfjördur Weather in October
October in Hafnarfjördur typically sees daytime highs of 8°C (46°F) and nighttime lows of 3°C (37°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Hafnarfjördur in October
Historically, the month has about 20 days of rain, averaging 123 mm (4.8 in) in total. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Hafnarfjördur in October
In October, expect low temperatures in Hafnarfjördur, with highs of 8°C (46°F) and lows of 3°C (37°F) at night. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. Nights fall to 3°C (37°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Hafnarfjördur in October
The area sees fewer sunny days, with a projection of about 92 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.
Wind Speed in Hafnarfjördur in October
Wind speeds average 5 m/s (10 knots) during October. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in October
The water temperature is only 9°C (48°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June and July typically offer the best weather for Hafnarfjördur.
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 Hafnarfjördur's climate page.
Hafnarfjördur Temperature in October
Min Temperature
3°C (37°F)
Max Temperature
8°C (46°F)
Water Temperature
9°C (48°F) *
Chance of Rain
65%
Precipitation
123 mm (4.8 in)
Rainy days
20 days
Humidity
80% *
Windspeed
5 m/s (10 knots) *
Sunshine
92 hours *
Percentage Sunshine
31% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hafnarfjördur typically drop from around 9°C (48°F) at the start of October to approximately 5°C (41°F) by the end. Nights are cold, with lows typically ranging from 1°C (34°F) to 5°C (41°F).
Average temperatures in October
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 October
Historical weather for Hafnarfjördur in October
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.
Hafnarfjördur historical weather extremes in October
Our historical data for Hafnarfjördur spans 1976 to 2025, revealing these weather extremes.
- The hottest October day on record in Hafnarfjördur reached 15°C (59°F) (October 18, 2001).
- The lowest daytime temperature in October was -2°C (28°F), recorded on October 31, 1996.
- Hafnarfjördur registered its coldest October night on October 30, 2025, with temperatures dropping to -9°C (16°F).
- The heaviest October precipitation occurred on October 21, 1977, when 81 mm (3.2 in) of precipitation fell.
Best Places in Iceland in October
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in October →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Hafnarfjördur in October
Dress warmly and in layers for your trip to Hafnarfjördur in October. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 9°C (48°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Hafnarfjördur in October
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 Hafnarfjördur's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Hafnarfjördur climate overview or explore weather in Iceland.
