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Selfoss Weather in October
October in Selfoss averages 8°C (46°F) during the day and 3°C (37°F) at night. Quite a bit of rainfall is typical this month, with around 151 mm (5.9 in) on average. An umbrella is a good idea.
Rainfall in Selfoss in October
Typically around 19 days of rainfall are expected, averaging 151 mm (5.9 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Selfoss in October
Expect highs of 8°C (46°F) in Selfoss in October, with nights dropping to around 3°C (37°F). The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. 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 Selfoss 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.October in Selfoss 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.
Selfoss Temperature in October
Min Temperature
3°C (37°F)
Max Temperature
8°C (46°F)
Chance of Rain
63%
Precipitation
151 mm (5.9 in)
Rainy days
19 days
Humidity
80% *
Sunshine
92 hours *
Percentage Sunshine
31% *
* Data from: Reykjavík, Iceland (48 KM, 30 Miles).
Selfoss Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Selfoss - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Selfoss typically drop from around 9°C (48°F) at the start of October to approximately 6°C (43°F) by the end. Nights are cold, with lows typically ranging from 0°C (32°F) to 4°C (39°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 records for Selfoss in October
Browse day-by-day weather records for Selfoss spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Selfoss historical weather extremes in October
Based on weather observations in Selfoss between 1976 and 2025, these are the recorded extremes during October.
- The warmest day in October was on October 18, 2001, with a maximum of 15°C (59°F).
- The lowest daytime temperature in October was -3°C (27°F), recorded on October 31, 1996.
- Nighttime temperatures dropped to -9°C (16°F) on October 29, 2025, marking the coldest October night on record.
- The wettest October day on record brought 81 mm (3.2 in) of precipitation to Selfoss (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
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Selfoss in October
We recommend to layer up for chilly conditions in Selfoss 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. Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.
What To Do in Selfoss in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling4/10 -
Walking4/10 -
Camping3/10 -
Outdoor sports4/10
Selfoss 3-Day Forecast
More climate data for Selfoss
Temperature Rainfall Sunshine Humidity
See the full Selfoss climate overview or explore weather in Iceland.
Popular in October
Where to go in October - average daytime high across popular destinations.
Keflavík
8°C (46°F) Hella9°C (48°F) Selfoss
8°C (46°F) Kópavogur8°C (46°F) Höfn7°C (45°F) Reykjavík8°C (46°F) Egilsstadir5°C (41°F) Akureyri4°C (39°F) Bucket list
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