Keflavík Weather in October
In Keflavík, October brings low daytime temperatures around 8°C (46°F), with nights cooling to 4°C (39°F). Expect quite a bit of rainfall this month.
Rainfall in Keflavík in October
On average, there are about 20 days with rain during this month, averaging 129 mm (5.1 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Keflavík in October
Temperatures in Keflavík in October top out at 8°C (46°F) and drop to 4°C (39°F) overnight. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights fall to 4°C (39°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 Keflavík in October
The month is characterized by fewer sunny days, with roughly 92 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Keflavík.
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 October
Min Temperature
4°C (39°F)
Max Temperature
8°C (46°F)
Chance of Rain
67%
Precipitation
129 mm (5.1 in)
Rainy days
20 days
Humidity
80% *
Sunshine
92 hours *
Percentage Sunshine
31% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Keflavík typically stay consistent throughout October, with daily highs averaging around 8°C (46°F). 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 Keflavík in October
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 October
Based on 49 years of weather observations in Keflavík between 1976 and 2025, these are the recorded extremes.
- Keflavík recorded its highest October temperature of 14°C (57°F) on October 7, 2014.
- On October 31, 1996, Keflavík saw its coldest October day with temperatures maxing out at -2°C (28°F).
- The coldest night in October in Keflavík was on October 15, 1993, with a minimum of -7°C (19°F).
- The wettest October day on record brought 81 mm (3.2 in) of precipitation to Keflavík (October 21, 1977).
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 Keflavík in October
We recommend to layer up for chilly conditions in Keflavík in October. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Keflavík 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 Keflavík's climate page.
Temperature Rainfall Sunshine Humidity
See the full Keflavík climate overview or explore weather in Iceland.
