Climate Chart of Interlaken, Switzerland
Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023
Set among the Swiss Alps, Interlaken, Switzerland, is represented here by climate data for 2013–2023. The monthly mean temperature ranges from a low of 2.0 °C in January to a high of 19.5 °C in July, giving visitors a sense of how much average conditions vary through the year. Rainfall, sunshine and snowfall also follow distinct monthly patterns, so the most suitable time to visit depends on whether cooler temperatures, lower average rainfall or more daily sunshine matters most.
Climate overview
Temperature
Monthly mean temperatures are lowest in January, at 2.0 °C, and reach their highest point in July, at 19.5 °C. These are averages for each month, not daytime maximum temperatures, so they describe the broad temperature pattern rather than the range visitors may encounter within a day. Across the calendar months, the unweighted mean of the monthly means is 10.5 °C. It provides a broad summary, but does not weight months by their number of days or describe the temperature on any particular date.
Rain
Mean daily rainfall is lowest in February, at 1.77 mm/day, making it a conditional option for visitors prioritising lower average rainfall. The highest monthly mean is in May, at 5.23 mm/day; visitors planning for that period may want rain-ready clothing and flexible outdoor plans. The unweighted mean across the monthly daily-rainfall means is 3.49 mm/day. These figures describe average daily amounts, not monthly totals, and they do not show how often rain falls or guarantee dry conditions in the month with the lowest mean.
Sunshine
Mean daily sunshine reaches its highest level in July, at 11.65 hours/day, while the lowest monthly mean is in December, at 4.77 hours/day. These averages can help with planning outdoor sightseeing, but sunshine duration is not the same as day length and does not guarantee clear skies on a particular day. The unweighted mean of the monthly sunshine means is 8.23 hours/day per day. Treat it as a broad guide to average sunshine rather than a forecast for an individual visit.
Snow
Mean daily snowfall is highest in January, at 9.68 mm/day; the unweighted mean across monthly daily-snowfall means is 3.57 mm/day. These are average amounts, not monthly totals, and do not establish how many days have snow, snow depth or snow cover, or whether skiing conditions will be suitable.
Best Travel Time Guide for Interlaken, Switzerland: Ideal Seasons and Weather Insights
For visitors prioritising cooler monthly averages, January is the relevant option: its mean temperature is 2.0 °C. This is a monthly average, not a prediction of daytime highs or the conditions on your travel dates, so check a forecast closer to departure and pack for variable temperatures. If lower average rainfall is the priority, consider February, when mean daily rainfall is 1.77 mm/day; this does not guarantee rain-free days. For rain preparation, note that the highest mean daily rainfall occurs in May, at 5.23 mm/day, so a waterproof layer and adaptable plans are useful considerations.
For outdoor plans where average sunshine is a consideration, July has the highest mean daily sunshine at 11.65 hours/day, while December has the lowest at 4.77 hours/day. These figures describe average sunshine duration, not daylight length or a guarantee of sunny weather, so they are best used as one planning factor rather than a promise about conditions. Snowfall averages are highest in January, at 9.68 mm/day per day. That average cannot tell you how many snowy days to expect or whether snow will cover the ground; check current conditions if snow-related plans matter to your visit.
Climate Data Overview for Interlaken, Switzerland
Explore the comprehensive climate data for Interlaken, Switzerland. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.
| Month | Average: Temperature °C | Rain (mm) / day | Snow (mm) / day | Sunshine (h) / day |
|---|---|---|---|---|
| Jan | 2.0 | 2.14 | 9.68 | 4.93 |
| Feb | 3.1 | 1.77 | 8.97 | 6.32 |
| Mar | 5.6 | 2.20 | 4.91 | 7.93 |
| Apr | 8.8 | 3.15 | 4.99 | 9.55 |
| May | 12.4 | 5.23 | 0.80 | 9.59 |
| Jun | 17.5 | 4.47 | 0.00 | 11.52 |
| Jul | 19.5 | 5.06 | 0.00 | 11.65 |
| Aug | 19.0 | 4.57 | 0.00 | 10.56 |
| Sep | 15.6 | 3.59 | 0.00 | 9.25 |
| Oct | 12.0 | 3.68 | 0.34 | 7.35 |
| Nov | 6.4 | 3.34 | 4.73 | 5.30 |
| Dec | 3.5 | 2.74 | 8.47 | 4.77 |
| Average | 10.5 | 3.49 | 3.57 | 8.23 |
