Daylight hours in Montevideo
Montevideo gets 14h 29m of daylight on its longest day in December, and 9h 49m on its shortest in June — a difference of 4h 40m across the year.
How fast the days change
Around 17 March, Montevideo gains or loses about 2.2 minutes of daylight every day.
Enough to notice over a fortnight, though the seasons arrive more gently here than further from the equator.
Sunrise and sunset by month
On the 15th of each month, in America/Montevideo local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:47 | 20:01 | 14h 14m | 12:54 |
| February | 06:18 | 19:38 | 13h 20m | 12:58 |
| March | 06:44 | 19:03 | 12h 19m | 12:53 |
| April | 07:08 | 18:20 | 11h 12m | 12:44 |
| May | 07:32 | 17:50 | 10h 18m | 12:41 |
| June | 07:50 | 17:39 | 9h 49m | 12:45 |
| July | 07:49 | 17:51 | 10h 02m | 12:50 |
| August | 07:24 | 18:13 | 10h 49m | 12:49 |
| September | 06:43 | 18:36 | 11h 52m | 12:39 |
| October | 06:01 | 18:59 | 12h 57m | 12:30 |
| November | 05:30 | 19:28 | 13h 57m | 12:29 |
| December | 05:25 | 19:54 | 14h 29m | 12:39 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:48 | 18:56 | 12h 08m |
| June solstice | 21 Jun | 07:52 | 17:40 | 9h 48m |
| September equinox | 22 Sep | 06:33 | 18:41 | 12h 07m |
| December solstice | 21 Dec | 05:27 | 19:57 | 14h 30m |
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.
Other cities in Uruguay
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.