Daylight hours in Windhoek
Windhoek gets 13h 30m of daylight on its longest day in December, and 10h 45m on its shortest in June — a difference of 2h 45m across the year.
How fast the days change
Around 17 March, Windhoek gains or loses about 1.3 minutes of daylight every day.
Barely perceptible — near the equator the length of the day hardly changes at all, and the seasons announce themselves through rain and heat instead.
Sunrise and sunset by month
On the 15th of each month, in Africa/Windhoek local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 06:20 | 19:41 | 13h 22m | 13:01 |
| February | 06:40 | 19:30 | 12h 50m | 13:05 |
| March | 06:53 | 19:07 | 12h 14m | 13:00 |
| April | 07:04 | 18:38 | 11h 34m | 12:51 |
| May | 07:16 | 18:19 | 11h 02m | 12:48 |
| June | 07:29 | 18:14 | 10h 45m | 12:52 |
| July | 07:31 | 18:23 | 10h 53m | 12:57 |
| August | 07:16 | 18:36 | 11h 20m | 12:56 |
| September | 06:48 | 18:45 | 11h 57m | 12:46 |
| October | 06:19 | 18:55 | 12h 36m | 12:37 |
| November | 06:00 | 19:12 | 13h 12m | 12:36 |
| December | 06:01 | 19:31 | 13h 30m | 12:46 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:55 | 19:02 | 12h 07m |
| June solstice | 21 Jun | 07:30 | 18:15 | 10h 45m |
| September equinox | 22 Sep | 06:41 | 18:47 | 12h 06m |
| December solstice | 21 Dec | 06:04 | 19:35 | 13h 31m |
The equinoxes give almost exactly twelve hours of daylight everywhere on earth — "almost" because sunrise is defined by the sun's upper edge rather than its centre, and the atmosphere bends its light over the horizon before it has really arrived. Both lengthen the day by a few minutes.
Assumptions
- Sea-level horizon. Hills, mountains and buildings all delay sunrise and bring sunset forward, sometimes by a lot in a valley.
- Standard refraction. Sunrise is taken at −0.833°, allowing for the sun's disc and average atmospheric bending. Unusual air conditions shift it by a minute or two.
- Local clock time, with daylight saving applied from the IANA timezone database.