Voi weather in September
In September, Voi sees average daytime highs of 28°C and overnight lows near 18°C, with 10 mm of rain across 2.9 wet days and about 12 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 23% of the time in September, and the air most often feels humid.
Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Voi's 4th-clearest and 3rd-windiest month. For the whole year in context, see Voi's year-round climate.
- Daytime high
- 28°
- 9th warmest
- Overnight low
- 18°
- 3rd coldest
- Rainfall
- 10 mm
- 2.9 wet days
- Daylight
- 12 hours
- 6:21 AM – 6:20 PM
- Cloud cover
- 54%
- 4th clearest
- Wind
- 12 km/h
- 3rd windiest
- Solar energy
- 5.43 kWh/m²
- Travel score
- 7.2
- out of 10
Voi is town in Kenya.
- Founded
- 1932
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 28°C through the month.
A typical September day in Voi reaches about 28°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 18 |
| 2 | 27 | 18 |
| 3 | 27 | 18 |
| 4 | 27 | 18 |
| 5 | 27 | 18 |
| 6 | 27 | 18 |
| 7 | 27 | 18 |
| 8 | 27 | 18 |
| 9 | 27 | 18 |
| 10 | 27 | 18 |
| 11 | 28 | 18 |
| 12 | 28 | 18 |
| 13 | 28 | 18 |
| 14 | 28 | 18 |
| 15 | 28 | 18 |
| 16 | 28 | 18 |
| 17 | 28 | 18 |
| 18 | 28 | 18 |
| 19 | 28 | 18 |
| 20 | 28 | 18 |
| 21 | 28 | 18 |
| 22 | 28 | 18 |
| 23 | 28 | 18 |
| 24 | 28 | 18 |
| 25 | 28 | 18 |
| 26 | 28 | 18 |
| 27 | 28 | 18 |
| 28 | 28 | 18 |
| 29 | 28 | 18 |
| 30 | 29 | 18 |
How September really feels in Voi
Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Voi weather by month
How September compares with the rest of the year at a glance. September is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 21° | 46 | 7.9 | 12.2 | 5.4 |
| Feb | 31° / 21° | 40 | 5.5 | 12.1 | 4.9 |
| Mar | 31° / 21° | 70 | 12.8 | 12 | 4.3 |
| Apr | 29° / 21° | 79 | 18 | 11.9 | 4.3 |
| May | 28° / 20° | 53 | 10.9 | 11.8 | 6.1 |
| Jun | 27° / 18° | 8 | 2.4 | 11.8 | 7.3 |
| Jul | 27° / 17° | 5 | 1.5 | 11.8 | 7.6 |
| Aug | 27° / 17° | 8 | 2.4 | 11.9 | 7.5 |
| Sep | 28° / 18° | 10 | 2.9 | 12 | 7.2 |
| Oct | 29° / 19° | 36 | 8.4 | 12.1 | 5.7 |
| Nov | 29° / 20° | 77 | 17.5 | 12.2 | 4.5 |
| Dec | 29° / 21° | 91 | 17.9 | 12.2 | 4.6 |
Cloud cover in September
The sky is clear or mostly clear about 23% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 34% of September, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to open up as the month goes on.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 48 | 48 | 49 | 49 | 49 | 50 | 51 | 52 | 52 | 54 | 54 | 55 | 55 | 56 | 57 | 58 | 58 | 59 | 59 | 61 | 61 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 |
| Cloudier (%) | 52 | 52 | 51 | 51 | 51 | 50 | 49 | 48 | 48 | 46 | 46 | 45 | 45 | 44 | 43 | 42 | 42 | 41 | 41 | 39 | 39 | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 36 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 48 | 52 |
| 2 | 48 | 52 |
| 3 | 49 | 51 |
| 4 | 49 | 51 |
| 5 | 49 | 51 |
| 6 | 50 | 50 |
| 7 | 51 | 49 |
| 8 | 52 | 48 |
| 9 | 52 | 48 |
| 10 | 54 | 46 |
| 11 | 54 | 46 |
| 12 | 55 | 45 |
| 13 | 55 | 45 |
| 14 | 56 | 44 |
| 15 | 57 | 43 |
| 16 | 58 | 42 |
| 17 | 58 | 42 |
| 18 | 59 | 41 |
| 19 | 59 | 41 |
| 20 | 61 | 39 |
| 21 | 61 | 39 |
| 22 | 62 | 38 |
| 23 | 63 | 37 |
| 24 | 63 | 37 |
| 25 | 63 | 37 |
| 26 | 64 | 36 |
| 27 | 64 | 36 |
| 28 | 64 | 36 |
| 29 | 64 | 36 |
| 30 | 64 | 36 |
Chance of precipitation in September
Voi gets around 10 mm of rain over 2.9 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 10% and peaks near 15% on the wettest days. The odds climb toward the end of the month.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 15 |
| Rain chance (%) | |
|---|---|
| 1 | 7 |
| 2 | 7 |
| 3 | 7 |
| 4 | 7 |
| 5 | 7 |
| 6 | 7 |
| 7 | 7 |
| 8 | 7 |
| 9 | 8 |
| 10 | 8 |
| 11 | 8 |
| 12 | 9 |
| 13 | 9 |
| 14 | 9 |
| 15 | 10 |
| 16 | 10 |
| 17 | 11 |
| 18 | 11 |
| 19 | 11 |
| 20 | 11 |
| 21 | 11 |
| 22 | 12 |
| 23 | 12 |
| 24 | 12 |
| 25 | 12 |
| 26 | 13 |
| 27 | 13 |
| 28 | 14 |
| 29 | 14 |
| 30 | 15 |
Humidity in September
Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the humid band about 61% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 46 | 45 | 45 | 44 | 44 | 43 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 27 | 26 | 25 | 24 | 23 | 22 | 21 |
| Humid (%) | 53 | 54 | 54 | 55 | 55 | 55 | 55 | 56 | 57 | 58 | 58 | 59 | 60 | 61 | 61 | 62 | 63 | 64 | 64 | 65 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 67 | 67 | 67 |
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 10 | 11 | 12 |
| Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|
| 1 | 46 | 53 | 1 |
| 2 | 45 | 54 | 1 |
| 3 | 45 | 54 | 1 |
| 4 | 44 | 55 | 1 |
| 5 | 44 | 55 | 1 |
| 6 | 43 | 55 | 2 |
| 7 | 43 | 55 | 2 |
| 8 | 42 | 56 | 2 |
| 9 | 41 | 57 | 2 |
| 10 | 40 | 58 | 2 |
| 11 | 39 | 58 | 3 |
| 12 | 38 | 59 | 3 |
| 13 | 37 | 60 | 3 |
| 14 | 36 | 61 | 3 |
| 15 | 35 | 61 | 4 |
| 16 | 34 | 62 | 4 |
| 17 | 33 | 63 | 4 |
| 18 | 32 | 64 | 4 |
| 19 | 31 | 64 | 5 |
| 20 | 30 | 65 | 5 |
| 21 | 29 | 66 | 5 |
| 22 | 28 | 66 | 6 |
| 23 | 27 | 66 | 7 |
| 24 | 27 | 66 | 7 |
| 25 | 26 | 66 | 8 |
| 26 | 25 | 66 | 9 |
| 27 | 24 | 66 | 10 |
| 28 | 23 | 67 | 10 |
| 29 | 22 | 67 | 11 |
| 30 | 21 | 67 | 12 |
Wind in September
Winds average 12 km/h in September.
Across September, daily wind ranges from about 11 km/h on the calmest days to 12 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | light breeze | 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 | 12 | light breeze |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over September. Sunrise moves from 6:27 AM to 6:14 AM, and sunset from 6:24 PM to 6:16 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunrise (AM) | 6:27 | 6:27 | 6:27 | 6:26 | 6:26 | 6:25 | 6:25 | 6:24 | 6:24 | 6:23 | 6:23 | 6:23 | 6:22 | 6:22 | 6:21 | 6:21 | 6:20 | 6:20 | 6:19 | 6:19 | 6:18 | 6:18 | 6:17 | 6:17 | 6:16 | 6:16 | 6:16 | 6:15 | 6:15 | 6:14 |
| Sunset (PM) | 6:24 | 6:23 | 6:23 | 6:23 | 6:23 | 6:22 | 6:22 | 6:22 | 6:21 | 6:21 | 6:21 | 6:21 | 6:20 | 6:20 | 6:20 | 6:20 | 6:19 | 6:19 | 6:19 | 6:18 | 6:18 | 6:18 | 6:18 | 6:17 | 6:17 | 6:17 | 6:17 | 6:16 | 6:16 | 6:16 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.9 | 6:27 | 6:24 |
| 2 | 11.9 | 6:27 | 6:23 |
| 3 | 11.9 | 6:27 | 6:23 |
| 4 | 11.9 | 6:26 | 6:23 |
| 5 | 11.9 | 6:26 | 6:23 |
| 6 | 12.0 | 6:25 | 6:22 |
| 7 | 12.0 | 6:25 | 6:22 |
| 8 | 12.0 | 6:24 | 6:22 |
| 9 | 12.0 | 6:24 | 6:21 |
| 10 | 12.0 | 6:23 | 6:21 |
| 11 | 12.0 | 6:23 | 6:21 |
| 12 | 12.0 | 6:23 | 6:21 |
| 13 | 12.0 | 6:22 | 6:20 |
| 14 | 12.0 | 6:22 | 6:20 |
| 15 | 12.0 | 6:21 | 6:20 |
| 16 | 12.0 | 6:21 | 6:20 |
| 17 | 12.0 | 6:20 | 6:19 |
| 18 | 12.0 | 6:20 | 6:19 |
| 19 | 12.0 | 6:19 | 6:19 |
| 20 | 12.0 | 6:19 | 6:18 |
| 21 | 12.0 | 6:18 | 6:18 |
| 22 | 12.0 | 6:18 | 6:18 |
| 23 | 12.0 | 6:17 | 6:18 |
| 24 | 12.0 | 6:17 | 6:17 |
| 25 | 12.0 | 6:16 | 6:17 |
| 26 | 12.0 | 6:16 | 6:17 |
| 27 | 12.0 | 6:16 | 6:17 |
| 28 | 12.0 | 6:15 | 6:16 |
| 29 | 12.0 | 6:15 | 6:16 |
| 30 | 12.0 | 6:14 | 6:16 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.43 kWh/m².
For context, solar energy here swings from a low near 4.61 kWh/m² to a high of 6.63 kWh/m² in February across the year — September's 5.43 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.1 | Bright |
| 2 | 5.1 | Bright |
| 3 | 5.1 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.2 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.3 | Bright |
| 12 | 5.3 | Bright |
| 13 | 5.3 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.6 | Bright |
| 23 | 5.7 | Bright |
| 24 | 5.7 | Bright |
| 25 | 5.7 | Bright |
| 26 | 5.7 | Bright |
| 27 | 5.7 | Bright |
| 28 | 5.7 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.8 | Bright |
Is September a good time to visit Voi?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Voi for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Voi in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Voi sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: sun protection.
UV index in Voi in September
Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Voi peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (extreme).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 15 | 16 | 15 | 12 | 10 | 11 | 11 | 13 | 14 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Very high |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Where is Voi?
Voi sits at 3.4°S, 38.6°E, 580 m above sea level, in Kenya. The nearest listed city is Taveta, 97 km away.
Topography around Voi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Voi.
Within 3 km, the terrain around Voi has significant variations in elevation — a maximum elevation change of 375 m around an average of 603 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,294 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,019 m.
The land around Voi is covered by shrubs (51%) and grassland (22%) within 3 km, grassland (41%) and shrubs (40%) within 16 km, and shrubs (56%) and grassland (42%) within 80 km.
Kenya travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type G
- 240 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $2,363
- 2025
- Happiness
- 4.7 / 10
- World Happiness, 2025
- Homicide rate
- 4.9
- per 100k, 2022
- Road deaths
- 28.3
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- High
- EF EPI 593
- 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 Voi (-3.396°, 38.5561°, elevation 580 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).