Reykjavik Weather in October
Iceland · Subarctic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
October in Reykjavik sees average temperatures ranging from a low of 2.3°C (36.1°F) to a high of 6.4°C (43.5°F), with a mean of 4.4°C (39.9°F). Compared to the annual average of 4.5°C (40.1°F), this month is 0.1°C cooler than the yearly norm. Precipitation averages 134.3mm, making it approximately 4.0mm wetter than the monthly average of 130.0mm. The city receives an average of 4.5 hours of sunshine per day during October, with relative humidity averaging 83.0%. Wind speeds reach an average maximum of 21.7 km/h. Snowfall averages 8.5cm during October, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Reykjavik, with wetter-than-average conditions compared to the rest of the year.
Planning around Reykjavik's daylight is more important than temperature. I was there in June and the midnight sun meant I could hike at 11pm — disorienting but incredible. December gives you about 4 hours of daylight, which limits outdoor plans severely. The data shows mild temperatures for the latitude (rarely below -5°C thanks to the Gulf Stream), but wind chill is the real factor. Pack windproof everything, regardless of season.
October vs Adjacent Months
| Metric | September | October | November |
|---|---|---|---|
| Mean Temp | 7.8°C (46.0°F) | 4.4°C (39.9°F) | 2.4°C (36.3°F) |
| Rainfall | 140.1mm | 134.3mm | 135.1mm |
| Sunshine | 5.9 hrs | 4.5 hrs | 2.2 hrs |
| Humidity | 82.8% | 83.0% | 79.9% |
| Wind | 22.3 km/h | 21.7 km/h | 25.9 km/h |
| Rainy Days | 21.8 | 20.6 | 19.0 |
| Snowfall | 1.2 cm | 8.5 cm | 18.5 cm |
Seasonal Context
October falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Reykjavik in October, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Reykjavik in October?
The average temperature in Reykjavik during October ranges from 2.3°C (36.1°F) to 6.4°C (43.5°F), with a mean of 4.4°C (39.9°F).
How much does it rain in Reykjavik in October?
Reykjavik receives an average of 134.3mm of precipitation in October, spread across approximately 20.6 rainy days.
What should I pack for Reykjavik in October?
Based on October weather data, pack heavy winter clothing, thermal layers, and a warm coat. Rain gear is essential — this month averages 134.3mm of precipitation.
Is October a good time to visit Reykjavik?
October is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Reykjavik
Cities with Similar October Climate (Subarctic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 64.15°, -21.94°. Timezone: Atlantic/Reykjavik. Last updated: 2026-07-30.