Sunrise and Sunset times in Viana do Castelo, Portugal 
Viana do Castelo
☁️ Low chance of a spectacular sunset.
Viana do Castelo, Portugal
15 555 people
Current temperature 20 ° C 
Moderate or heavy rain with thunder
Today:
 Sunrise: 07:21:03
|
 Sunset: 19:36:20
|
Day Length: 12h 15m 17s
Time zone: Europe/Lisbon, UTC 1 h.
Latitude: 41.6962, Longitude: -8.8441
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Sep-01, Monday | 07:01:38 | 13:35:17 | 20:08:56 | 13h 7m 18s |
| 2025-Sep-02, Tuesday | 07:02:40 | 13:34:58 | 20:07:16 | 13h 4m 36s |
| 2025-Sep-03, Wednesday | 07:03:41 | 13:34:38 | 20:05:36 | 13h 1m 55s |
| 2025-Sep-04, Thursday | 07:04:42 | 13:34:18 | 20:03:55 | 12h 59m 13s |
| 2025-Sep-05, Friday | 07:05:43 | 13:33:58 | 20:02:14 | 12h 56m 31s |
| 2025-Sep-06, Saturday | 07:06:44 | 13:33:38 | 20:00:32 | 12h 53m 48s |
| 2025-Sep-07, Sunday | 07:07:45 | 13:33:18 | 19:58:50 | 12h 51m 5s |
| 2025-Sep-08, Monday | 07:08:46 | 13:32:57 | 19:57:07 | 12h 48m 21s |
| 2025-Sep-09, Tuesday | 07:09:48 | 13:32:36 | 19:55:24 | 12h 45m 36s |
| 2025-Sep-10, Wednesday | 07:10:49 | 13:32:15 | 19:53:41 | 12h 42m 52s |
| 2025-Sep-11, Thursday | 07:11:50 | 13:31:54 | 19:51:58 | 12h 40m 8s |
| 2025-Sep-12, Friday | 07:12:51 | 13:31:33 | 19:50:14 | 12h 37m 23s |
| 2025-Sep-13, Saturday | 07:13:52 | 13:31:11 | 19:48:31 | 12h 34m 39s |
| 2025-Sep-14, Sunday | 07:14:53 | 13:30:50 | 19:46:47 | 12h 31m 54s |
| 2025-Sep-15, Monday | 07:15:55 | 13:30:29 | 19:45:02 | 12h 29m 7s |
| 2025-Sep-16, Tuesday | 07:16:56 | 13:30:07 | 19:43:18 | 12h 26m 22s |
| 2025-Sep-17, Wednesday | 07:17:58 | 13:29:46 | 19:41:34 | 12h 23m 36s |
| 2025-Sep-18, Thursday | 07:18:59 | 13:29:24 | 19:39:49 | 12h 20m 50s |
| 2025-Sep-19, Friday | 07:20:01 | 13:29:03 | 19:38:05 | 12h 18m 4s |
| 2025-Sep-20, Saturday | 07:21:03 | 13:28:41 | 19:36:20 | 12h 15m 17s |
| 2025-Sep-21, Sunday | 07:22:04 | 13:28:20 | 19:34:36 | 12h 12m 32s |
| 2025-Sep-22, Monday | 07:23:06 | 13:27:59 | 19:32:52 | 12h 9m 46s |
| 2025-Sep-23, Tuesday | 07:24:09 | 13:27:38 | 19:31:07 | 12h 6m 58s |
| 2025-Sep-24, Wednesday | 07:25:11 | 13:27:17 | 19:29:23 | 12h 4m 12s |
| 2025-Sep-25, Thursday | 07:26:13 | 13:26:56 | 19:27:39 | 12h 1m 26s |
| 2025-Sep-26, Friday | 07:27:16 | 13:26:36 | 19:25:55 | 11h 58m 39s |
| 2025-Sep-27, Saturday | 07:28:19 | 13:26:15 | 19:24:12 | 11h 55m 53s |
| 2025-Sep-28, Sunday | 07:29:22 | 13:25:55 | 19:22:28 | 11h 53m 6s |
| 2025-Sep-29, Monday | 07:30:25 | 13:25:35 | 19:20:45 | 11h 50m 20s |
| 2025-Sep-30, Tuesday | 07:31:28 | 13:25:15 | 19:19:03 | 11h 47m 35s |
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)
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