Iceland Climate: Monthly Averages and Trip Planning
Use climate to choose the kind of trip you want; use the forecast to decide what to do on a particular day. A Reykjavík monthly average cannot tell you whether a mountain road will be open or a windy coastal walk will be comfortable.
A monthly baseline with a defined place and period
| Month | Average daily high | Average daily low |
|---|---|---|
| January | 3.2 | -1.7 |
| February | 3.3 | -1.9 |
| March | 4.2 | -1.3 |
| April | 6.9 | 1.0 |
| May | 10.1 | 4.0 |
| June | 13.0 | 7.2 |
| July | 14.9 | 9.1 |
| August | 14.1 | 8.6 |
| September | 11.4 | 6.2 |
| October | 7.6 | 2.7 |
| November | 4.7 | -0.1 |
| December | 3.3 | -1.6 |
These are average daily maximum and minimum temperatures, not record extremes or a forecast. The data come from the WMO 1991–2020 normals for Reykjavík, supplied by the Icelandic Meteorological Office and archived by NOAA/NCEI. The table uses the same published observations as our Iceland statistics dataset; values are not relabeled as current-year weather.
Download the source station sheet (source file rechecked September 10, 2026). For Fahrenheit, multiply °C by 1.8 and add 32.
Why your route matters more than a national average
The Met Office’s climate report describes a maritime climate with substantial regional variation. Its 1981–2010 analysis gives annual mean temperatures around 6°C on the south coast and 3°C on the north coast, with a colder highland interior. These are annual regional figures from a different period; they must not be mixed into the Reykjavík monthly table.
Climate of Iceland: climate report (source checked 2026-09-10)
| Where you are going | What to check separately |
|---|---|
| Reykjavík and nearby coast | Local wind, precipitation and the hourly forecast for outdoor plans. |
| North or east Iceland | The forecast for the actual town and connecting roads; do not substitute the capital’s weather. |
| Highlands | Road opening, snow and the conditions of the specific route. A summer booking does not establish access. |
| Glacier or exposed coast | Activity-specific guidance and operator decisions, in addition to the regional forecast. |
Avoid choosing a region because it is described as always clearer, calmer or less windy. A broad climate comparison is not a promise for the dates you travel.
Build a plan that can change with the weather
| Trip style | Keep flexible | Prepare before departure |
|---|---|---|
| Summer road trip | Outdoor stop order and any highland detour. | A forecast check, rain/wind layers and an alternative on open roads. |
| Autumn or spring break | Daylight-dependent walks and evening travel. | A shorter itinerary option; clothing for both wet and cold conditions. |
| Winter visit | Road days and exposed viewpoints. | An indoor day, realistic travel margins and confirmation of vehicle/activity requirements. |
Do not assume a road opens on the same date every year. Check official road information and travel alerts when finalising the route. For aurora planning, see when to see the northern lights.
Pack for the activity as well as the month
- Start with layers you can add or remove, plus an outer layer suited to wind and rain.
- Keep a dry spare layer where you can reach it; a wet garment in the bottom of a bag does not help at a stop.
- Match footwear and equipment to the planned route. Ask the activity operator what is supplied and what you must bring.
- Include warm accessories for stationary activities such as waiting for an aurora.
- Check the forecast again after arrival rather than relying on the packing decisions you made weeks earlier.
Appropriate clothing (source checked 2026-09-10)
A practical morning check
- Read Met Office forecasts and warnings for the places you will actually visit.
- Check road conditions for both the outbound and return route.
- Confirm weather-sensitive bookings with the operator.
- Choose your shorter or indoor alternative early if the original plan no longer fits.
A weather warning is not something to offset by adding a few minutes to a driving estimate. Keep plans within your experience and the current official guidance.
Planning help
Planning questions
Quick answers with safety notes where it matters.
Are these temperatures the forecast for my trip?
No. The table contains Reykjavík 1991–2020 climate normals. Use the Met Office forecast and warnings for your dates and locations.
Can I use Reykjavík temperatures for the highlands?
No. Elevation, exposure and regional differences matter. Check the specific route and access conditions.
What is an average daily high?
It is the average of daily maximum temperatures for the stated month and reference period, not the warmest temperature you could encounter.
For monthly temperature and rainfall averages, explore the climate data in our Iceland statistics.