Sunrise and Sunset times in Viana do Castelo, Portugal 
Today:
 Sunrise: 07:58:32
|
 Sunset: 17:07:37
|
Day Length: 9h 9m 5s
Time zone: Europe/Lisbon, UTC 0 h.
Latitude: 41.6962, Longitude: -8.8441
Viana do Castelo
Viana do Castelo, Portugal 
15 555 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Dec-01, Monday | 07:43:06 | 12:24:29 | 17:05:53 | 9h 22m 47s |
| 2025-Dec-02, Tuesday | 07:44:08 | 12:24:52 | 17:05:37 | 9h 21m 29s |
| 2025-Dec-03, Wednesday | 07:45:08 | 12:25:16 | 17:05:24 | 9h 20m 16s |
| 2025-Dec-04, Thursday | 07:46:08 | 12:25:40 | 17:05:12 | 9h 19m 4s |
| 2025-Dec-05, Friday | 07:47:06 | 12:26:05 | 17:05:04 | 9h 17m 58s |
| 2025-Dec-06, Saturday | 07:48:03 | 12:26:30 | 17:04:57 | 9h 16m 54s |
| 2025-Dec-07, Sunday | 07:48:58 | 12:26:56 | 17:04:53 | 9h 15m 55s |
| 2025-Dec-08, Monday | 07:49:52 | 12:27:22 | 17:04:52 | 9h 15m 0s |
| 2025-Dec-09, Tuesday | 07:50:45 | 12:27:49 | 17:04:53 | 9h 14m 8s |
| 2025-Dec-10, Wednesday | 07:51:36 | 12:28:16 | 17:04:56 | 9h 13m 20s |
| 2025-Dec-11, Thursday | 07:52:26 | 12:28:44 | 17:05:01 | 9h 12m 35s |
| 2025-Dec-12, Friday | 07:53:14 | 12:29:11 | 17:05:09 | 9h 11m 55s |
| 2025-Dec-13, Saturday | 07:54:00 | 12:29:40 | 17:05:20 | 9h 11m 20s |
| 2025-Dec-14, Sunday | 07:54:44 | 12:30:08 | 17:05:32 | 9h 10m 48s |
| 2025-Dec-15, Monday | 07:55:27 | 12:30:37 | 17:05:47 | 9h 10m 20s |
| 2025-Dec-16, Tuesday | 07:56:08 | 12:31:06 | 17:06:05 | 9h 9m 57s |
| 2025-Dec-17, Wednesday | 07:56:47 | 12:31:36 | 17:06:24 | 9h 9m 37s |
| 2025-Dec-18, Thursday | 07:57:24 | 12:32:05 | 17:06:46 | 9h 9m 22s |
| 2025-Dec-19, Friday | 07:57:59 | 12:32:35 | 17:07:10 | 9h 9m 11s |
| 2025-Dec-20, Saturday | 07:58:32 | 12:33:04 | 17:07:37 | 9h 9m 5s |
| 2025-Dec-21, Sunday | 07:59:03 | 12:33:34 | 17:08:05 | 9h 9m 2s |
| 2025-Dec-22, Monday | 07:59:32 | 12:34:04 | 17:08:36 | 9h 9m 4s |
| 2025-Dec-23, Tuesday | 07:59:59 | 12:34:34 | 17:09:09 | 9h 9m 10s |
| 2025-Dec-24, Wednesday | 08:00:24 | 12:35:04 | 17:09:44 | 9h 9m 20s |
| 2025-Dec-25, Thursday | 08:00:46 | 12:35:33 | 17:10:20 | 9h 9m 34s |
| 2025-Dec-26, Friday | 08:01:07 | 12:36:03 | 17:10:59 | 9h 9m 52s |
| 2025-Dec-27, Saturday | 08:01:25 | 12:36:33 | 17:11:40 | 9h 10m 15s |
| 2025-Dec-28, Sunday | 08:01:40 | 12:37:02 | 17:12:23 | 9h 10m 43s |
| 2025-Dec-29, Monday | 08:01:54 | 12:37:31 | 17:13:08 | 9h 11m 14s |
| 2025-Dec-30, Tuesday | 08:02:05 | 12:38:00 | 17:13:55 | 9h 11m 50s |
| 2025-Dec-31, Wednesday | 08:02:14 | 12:38:29 | 17:14:43 | 9h 12m 29s |
Day length in Viana do Castelo during the year on the chart:
Viana do Castelo on Portugal map:
Locations in the same time zone Europe/Lisbon
Lisbon (Lisboa), Porto (Porto), Braga (Braga), Setubal (Setúbal), Coimbra (Coimbra), Portimao (Faro), Evora (Évora), Aveiro (Aveiro), Leiria (Leiria), Faro (Faro), Beja (Beja), Braganca (Bragança), Castelo Branco (Castelo Branco), Guarda (Guarda), Santarem (Santarém), Viseu (Viseu), Covilha (Castelo Branco), Vila Real (Vila Real), Portalegre (Portalegre)
Largest populated areas in Portugal
Lisbon (Lisboa), Porto (Porto), Braga (Braga), Funchal (Madeira), Setubal (Setúbal), Coimbra (Coimbra), Ponta Delgada (Azores), Portimao (Faro), Evora (Évora), Aveiro (Aveiro), Leiria (Leiria), Faro (Faro), Beja (Beja), Braganca (Bragança), Castelo Branco (Castelo Branco), Guarda (Guarda), Santarem (Santarém), Viseu (Viseu), Covilha (Castelo Branco), Vila Real (Vila Real), Portalegre (Portalegre), Angra do Heroismo (Azores), Horta (Azores)
Countries closest to Portugal
*Calculation of distances from capital to capital
Daylight Hours FAQ: 10 Most Googled Questions Answered
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks