Interlaken weather in March
In March, Interlaken sees average daytime highs of 5°C and overnight lows near -3°C, with 114 mm of precipitation across 14.5 wet days and about 11.6 hours of daylight. It is the 8th-warmest and 11th-wettest month of the year here.
Highs climb over the month, from about 3°C in the first days to 7°C by the end. The sky is clear or mostly clear about 30% of the time in March, and the air most often feels dry.
Daylight stretches from about 10 h 42 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Interlaken's 4th-clearest and 4th-windiest month. For the whole year in context, see Interlaken's year-round climate.
- Daytime high
- 5°
- 8th warmest
- Overnight low
- -3°
- 4th coldest
- Precipitation
- 114 mm
- 14.5 wet days
- Daylight
- 11 h 36 min
- 6:51 AM – 6:26 PM
- Cloud cover
- 60%
- 4th clearest
- Wind
- 5 km/h
- 4th windiest
- Solar energy
- 3.77 kWh/m²
- Travel score
- 0.3
- out of 10
Temperature in March
Highs climb over the month, from about 3°C in the first days to 7°C by the end.
A typical March day in Interlaken reaches about 5°C in the afternoon and slips back to -3°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 11°C. Set against its neighbours, March runs about 4°C warmer than February and about 4°C cooler than April.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Avg low (°C) | -5 | -5 | -5 | -5 | -5 | -4 | -4 | -4 | -4 | -4 | -4 | -3 | -3 | -3 | -3 | -3 | -3 | -3 | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -1 | -1 | -1 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 3 | -5 |
| 2 | 3 | -5 |
| 3 | 3 | -5 |
| 4 | 3 | -5 |
| 5 | 4 | -5 |
| 6 | 4 | -4 |
| 7 | 4 | -4 |
| 8 | 4 | -4 |
| 9 | 4 | -4 |
| 10 | 5 | -4 |
| 11 | 5 | -4 |
| 12 | 5 | -3 |
| 13 | 5 | -3 |
| 14 | 5 | -3 |
| 15 | 6 | -3 |
| 16 | 6 | -3 |
| 17 | 6 | -3 |
| 18 | 6 | -3 |
| 19 | 6 | -2 |
| 20 | 6 | -2 |
| 21 | 6 | -2 |
| 22 | 6 | -2 |
| 23 | 6 | -2 |
| 24 | 7 | -2 |
| 25 | 7 | -2 |
| 26 | 7 | -2 |
| 27 | 7 | -2 |
| 28 | 7 | -2 |
| 29 | 7 | -1 |
| 30 | 7 | -1 |
| 31 | 7 | -1 |
How March really feels in Interlaken
Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in March is cold — wind chill drags the overnight "feels like" below the raw low.
Interlaken weather by month
How March compares with the rest of the year at a glance. March is the 8th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 0° / -7° | 119 | 13.6 | 13.3 | 8.8 | 0.0 |
| Feb | 1° / -6° | 106 | 12.2 | 11.7 | 10 | 0.0 |
| Mar | 5° / -3° | 114 | 14.5 | 12.4 | 11.6 | 0.3 |
| Apr | 9° / 0° | 124 | 14.8 | 9.2 | 13.3 | 1.6 |
| May | 13° / 4° | 193 | 19.1 | 5.4 | 14.8 | 3.0 |
| Jun | 17° / 8° | 198 | 19.1 | 1.4 | 15.6 | 4.3 |
| Jul | 19° / 10° | 211 | 19.2 | 0.8 | 15.3 | 5.0 |
| Aug | 19° / 10° | 210 | 18.3 | 1 | 14 | 5.0 |
| Sep | 15° / 7° | 145 | 14.4 | 2.1 | 12.4 | 4.0 |
| Oct | 11° / 3° | 116 | 12.1 | 4.7 | 10.6 | 2.6 |
| Nov | 5° / -2° | 122 | 13.6 | 10.7 | 9.2 | 0.3 |
| Dec | 1° / -5° | 125 | 14.1 | 13.2 | 8.4 | 0.0 |
Cloud cover in March
The sky is clear or mostly clear about 30% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 12% of March, with mostly cloudy or overcast conditions the remaining 58%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 37 | 37 | 37 | 37 | 37 | 38 | 39 | 40 | 41 | 41 | 42 | 43 | 45 | 45 | 45 | 45 | 46 | 46 | 45 | 45 | 45 | 43 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 42 | 42 |
| Cloudier (%) | 63 | 63 | 63 | 63 | 63 | 62 | 61 | 60 | 59 | 59 | 58 | 57 | 55 | 55 | 55 | 55 | 54 | 54 | 55 | 55 | 55 | 57 | 57 | 57 | 58 | 58 | 58 | 59 | 59 | 58 | 58 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 37 | 63 |
| 2 | 37 | 63 |
| 3 | 37 | 63 |
| 4 | 37 | 63 |
| 5 | 37 | 63 |
| 6 | 38 | 62 |
| 7 | 39 | 61 |
| 8 | 40 | 60 |
| 9 | 41 | 59 |
| 10 | 41 | 59 |
| 11 | 42 | 58 |
| 12 | 43 | 57 |
| 13 | 45 | 55 |
| 14 | 45 | 55 |
| 15 | 45 | 55 |
| 16 | 45 | 55 |
| 17 | 46 | 54 |
| 18 | 46 | 54 |
| 19 | 45 | 55 |
| 20 | 45 | 55 |
| 21 | 45 | 55 |
| 22 | 43 | 57 |
| 23 | 43 | 57 |
| 24 | 43 | 57 |
| 25 | 42 | 58 |
| 26 | 42 | 58 |
| 27 | 42 | 58 |
| 28 | 41 | 59 |
| 29 | 41 | 59 |
| 30 | 42 | 58 |
| 31 | 42 | 58 |
Chance of precipitation in March
Interlaken gets around 114 mm of rain and snow over 14.5 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 46% and peaks near 49% on the wettest days, and about 12 days bring snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 49 | 49 | 48 | 48 | 48 | 47 | 47 | 46 | 45 | 45 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 43 | 43 | 44 | 44 | 45 | 46 | 46 | 47 | 47 | 47 | 47 | 47 | 48 | 48 |
| Snow chance (%) | 46 | 45 | 45 | 45 | 44 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 49 | 46 |
| 2 | 49 | 45 |
| 3 | 48 | 45 |
| 4 | 48 | 45 |
| 5 | 48 | 44 |
| 6 | 47 | 44 |
| 7 | 47 | 43 |
| 8 | 46 | 42 |
| 9 | 45 | 41 |
| 10 | 45 | 40 |
| 11 | 44 | 39 |
| 12 | 43 | 38 |
| 13 | 43 | 37 |
| 14 | 43 | 36 |
| 15 | 42 | 36 |
| 16 | 42 | 35 |
| 17 | 42 | 35 |
| 18 | 43 | 35 |
| 19 | 43 | 35 |
| 20 | 44 | 35 |
| 21 | 44 | 35 |
| 22 | 45 | 36 |
| 23 | 46 | 36 |
| 24 | 46 | 36 |
| 25 | 47 | 36 |
| 26 | 47 | 36 |
| 27 | 47 | 36 |
| 28 | 47 | 36 |
| 29 | 47 | 35 |
| 30 | 48 | 35 |
| 31 | 48 | 35 |
Humidity in March
Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in March
Winds average 5 km/h in March.
Across March, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
| 31 | 5 | calm |
Sunrise & sunset in March
Daylight runs from about 10 h 42 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 102 minutes over March. Sunrise moves from 7:19 AM to 6:20 AM, and sunset from 6:04 PM to 6:47 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.7 | 10.8 | 10.9 | 10.9 | 11.0 | 11.0 | 11.1 | 11.1 | 11.2 | 11.2 | 11.3 | 11.4 | 11.4 | 11.5 | 11.5 | 11.6 | 11.6 | 11.7 | 11.8 | 11.8 | 11.9 | 11.9 | 12.0 | 12.0 | 12.1 | 12.2 | 12.2 | 12.3 | 12.3 | 12.4 | 12.4 |
| Sunrise (AM) | 7:19 | 7:18 | 7:16 | 7:14 | 7:12 | 7:10 | 7:08 | 7:06 | 7:04 | 7:02 | 7:00 | 6:59 | 6:57 | 6:55 | 6:53 | 6:51 | 6:49 | 6:47 | 6:45 | 6:43 | 6:41 | 6:39 | 6:36 | 6:34 | 6:32 | 6:30 | 6:28 | 6:26 | 6:24 | 6:22 | 6:20 |
| Sunset (PM) | 6:04 | 6:06 | 6:07 | 6:09 | 6:10 | 6:11 | 6:13 | 6:14 | 6:16 | 6:17 | 6:19 | 6:20 | 6:22 | 6:23 | 6:24 | 6:26 | 6:27 | 6:29 | 6:30 | 6:31 | 6:33 | 6:34 | 6:36 | 6:37 | 6:38 | 6:40 | 6:41 | 6:43 | 6:44 | 6:45 | 6:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.7 | 7:19 | 6:04 |
| 2 | 10.8 | 7:18 | 6:06 |
| 3 | 10.9 | 7:16 | 6:07 |
| 4 | 10.9 | 7:14 | 6:09 |
| 5 | 11.0 | 7:12 | 6:10 |
| 6 | 11.0 | 7:10 | 6:11 |
| 7 | 11.1 | 7:08 | 6:13 |
| 8 | 11.1 | 7:06 | 6:14 |
| 9 | 11.2 | 7:04 | 6:16 |
| 10 | 11.2 | 7:02 | 6:17 |
| 11 | 11.3 | 7:00 | 6:19 |
| 12 | 11.4 | 6:59 | 6:20 |
| 13 | 11.4 | 6:57 | 6:22 |
| 14 | 11.5 | 6:55 | 6:23 |
| 15 | 11.5 | 6:53 | 6:24 |
| 16 | 11.6 | 6:51 | 6:26 |
| 17 | 11.6 | 6:49 | 6:27 |
| 18 | 11.7 | 6:47 | 6:29 |
| 19 | 11.8 | 6:45 | 6:30 |
| 20 | 11.8 | 6:43 | 6:31 |
| 21 | 11.9 | 6:41 | 6:33 |
| 22 | 11.9 | 6:39 | 6:34 |
| 23 | 12.0 | 6:36 | 6:36 |
| 24 | 12.0 | 6:34 | 6:37 |
| 25 | 12.1 | 6:32 | 6:38 |
| 26 | 12.2 | 6:30 | 6:40 |
| 27 | 12.2 | 6:28 | 6:41 |
| 28 | 12.3 | 6:26 | 6:43 |
| 29 | 12.3 | 6:24 | 6:44 |
| 30 | 12.4 | 6:22 | 6:45 |
| 31 | 12.4 | 6:20 | 6:47 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 3.77 kWh/m².
For context, solar energy here swings from a low near 1.22 kWh/m² to a high of 5.71 kWh/m² in June across the year — March's 3.77 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.0 | 3.1 | 3.1 | 3.2 | 3.2 | 3.3 | 3.4 | 3.4 | 3.5 | 3.5 | 3.6 | 3.6 | 3.7 | 3.7 | 3.8 | 3.8 | 3.9 | 3.9 | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.4 | 4.4 | 4.5 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.0 | Moderate |
| 2 | 3.1 | Moderate |
| 3 | 3.1 | Moderate |
| 4 | 3.2 | Moderate |
| 5 | 3.2 | Moderate |
| 6 | 3.3 | Moderate |
| 7 | 3.4 | Moderate |
| 8 | 3.4 | Moderate |
| 9 | 3.5 | Moderate |
| 10 | 3.5 | Moderate |
| 11 | 3.6 | Moderate |
| 12 | 3.6 | Moderate |
| 13 | 3.7 | Moderate |
| 14 | 3.7 | Moderate |
| 15 | 3.8 | Moderate |
| 16 | 3.8 | Moderate |
| 17 | 3.9 | Moderate |
| 18 | 3.9 | Moderate |
| 19 | 4.0 | Moderate |
| 20 | 4.0 | Bright |
| 21 | 4.0 | Bright |
| 22 | 4.1 | Bright |
| 23 | 4.1 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.2 | Bright |
| 26 | 4.2 | Bright |
| 27 | 4.3 | Bright |
| 28 | 4.3 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.4 | Bright |
| 31 | 4.5 | Bright |
Is March a good time to visit Interlaken?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a weaker month for outdoor sightseeing in Interlaken.
What to pack for Interlaken in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Interlaken sees daytime highs around 5°C and nights near -3°C. Pack a warm layer, a heavy coat and rain gear. About 15 days see rain.
UV index in Interlaken in March
Clear-sky midday UV in March peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Interlaken peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 5 | 6 | 8 | 8 | 9 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Interlaken?
Interlaken sits at 46.7°N, 7.9°E, 0 m above sea level, in Switzerland. The nearest listed city is Lauterbrunnen, 11 km away.
Topography around Interlaken
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Interlaken.
Within 3 km, the terrain around Interlaken has large variations in elevation — a maximum elevation change of 1,058 m around an average of 749 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,389 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,230 m.
The land around Interlaken is covered by trees (54%) and grassland (24%) within 3 km, grassland (43%) and trees (42%) within 16 km, and trees (38%) and grassland (37%) within 80 km.
Switzerland travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / J
- 230 V · 50 Hz
- Prices
- ≈ 112% of US
- price level, 2025
- GDP per capita
- $114,769
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.6
- per 100k, 2023
- Road deaths
- 2.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- High
- EF EPI 564
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Interlaken (46.6839°, 7.8664°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).