Sunlight Hours in Teresina
Sunlight hours, shadow patterns, and solar analysis for Teresina, Brazil
Interactive 3D Shadow Map
Summer afternoon in Teresina
Teresina
3:30 PM • Summer Solstice
Interactive 3D shadow analysis map of Teresina. Shows real building shadows based on sun position calculations. Features include: time-of-day simulation, date selection for seasonal analysis, 3D building rendering, tree shadows, terrain elevation, and sun position indicators. Powered by Mapbox GL JS and SunCalc astronomical calculations.
Today's Sunlight
March Average
Sunrise
05:58
Sunset
18:01
Total Daylight
12h 3m
Sun Altitude
85°
at noon
Seasonal Extremes
Longest Day
12.3h
2026-12-21
Shortest Day
11.7h
2026-06-21
Explore Shadows in 3D
See exactly how building shadows fall across Teresina at any time of day or year.
-5.0892°
-42.8019°
Best Time to Visit Teresina
Month-by-month daylight conditions
Teresina lies in the tropics with consistent daylight year-round. Any time of year offers good sunlight conditions.
Peak Months
Dec, Jan, Nov, Feb
Shoulder Season
Oct & Mar
Summer
Jan
12.3h
Great
Summer
Feb
12.2h
Great
Autumn
Mar
12.1h
Great
Autumn
Apr
11.9h
Great
Autumn
May
11.8h
Great
Winter
Jun
11.8h
Great
Winter
Jul
11.8h
Great
Winter
Aug
11.9h
Great
Spring
Sep
12.0h
Great
Spring
Oct
12.1h
Great
Spring
Nov
12.3h
Great
Summer
Dec
12.3h
Great
Golden Hour in Teresina
Best times for photography
March Golden Hour
05:58 - 06:58
Blue hour from 05:28
17:01 - 18:01
Blue hour until 18:31
Best Months
- 1Year-round — Consistent golden hour length
- 2Apr-Oct — Milder temperatures for outdoor shoots
- 3Dec-Feb — Latest sunsets for evening shoots
Photography Tips
- In the tropics, golden hour is brief but intense - arrive early to your location
- The sun rises and sets nearly vertically, creating short but vibrant color displays
- Face north during midday for even lighting on subjects
- Check the 3D shadow map to scout locations and predict light direction
Understanding Teresina's Sunlight
AI-powered insights for your location
Teresina's tropical location (5.1°S) creates minimal seasonal variation, with winter days 0.6 hours shorter than summer. The sun reaches 72° at summer noon but only 62° in winter.
Key Challenges
- 1Consider local weather patterns that may affect sunshine
- 2Urban buildings may create additional shadows
Best Months
October through March offers the longest days and highest sun angles in the Southern Hemisphere.
Garden Tips
North-facing gardens receive the most consistent sunlight year-round in Teresina. Consider shadow patterns from neighboring structures when planning outdoor spaces.
Solar Energy Potential
Is Teresina good for solar panels?
Teresina receives approximately 2,415 hours of sunshine annually, making it an excellent location for solar energy. Most residential installations achieve payback within 5-7 years.
Annual Sun Hours
2,415
estimated
Optimal Panel Tilt
5°
facing north
Peak Production
Oct, Mar, Feb
highest output
Relative Monthly Production
Installation Tips for Teresina
- Orient panels north with a 5° tilt for optimal year-round performance
- Use the 3D shadow map to check for obstructions from trees or neighboring buildings
- Consider seasonal tilt adjustment: steeper in winter (20°), flatter in summer (10°)
UV Index & Sun Safety
Protect yourself in Teresina
March UV Index
Maximum protection essential. Avoid outdoor activities during peak hours.
Monthly UV Index
Peak UV Months
Feb, Mar, Sep have the highest UV levels (up to 15). Take extra precautions during these months.
Protection Needed
- SPF 50+ broad-spectrum sunscreen
- Full coverage clothing and wide-brim hat
- Stay indoors 10am-4pm
Outdoor Activities in Teresina
Best times for popular activities
Best Activities in March
Outdoor Dining
25% match
Hiking & Walking
25% match
Beach & Swimming
25% match
Year-Round Activity Guide
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outdoor Dining | ★ | ★ | ★ | ★ | ★ | ★ | ||||||
| Hiking & Walking | ★ | ★ | ★ | ★ | ★ | ★ | ||||||
| Beach & Swimming | ★ | ★ | ★ | ★ | ★ | ★ | ||||||
| Photography | ★ | ★ | ★ | ★ | ★ | ★ | ||||||
| Gardening | ★ | ★ | ★ | ★ | ★ | ★ | ||||||
| Running & Cycling | ★ | ★ | ★ | ★ | ★ | ★ |
Outdoor Dining
Enjoy al fresco dining during the warmer months with longer evening light.
Hiking & Walking
Mild temperatures and good daylight make spring and autumn ideal for trails.
Beach & Swimming
Peak sun and warmest temperatures during summer months.
Seasonal Sunlight Calendar
Monthly averages throughout the year
| Month | Sunrise | Sunset | Daylight | Sun Angle |
|---|---|---|---|---|
☀️January | 05:51 | 18:09 | 12h 17m | 75° |
☀️February | 05:59 | 18:10 | 12h 11m | 83° |
March | 05:58 | 18:01 | 12h 3m | 85° |
April | 05:53 | 17:48 | 11h 55m | 75° |
May | 05:53 | 17:41 | 11h 48m | 66° |
June | 05:59 | 17:44 | 11h 45m | 62° |
July | 06:04 | 17:50 | 11h 47m | 64° |
August | 05:59 | 17:51 | 11h 52m | 72° |
September | 05:46 | 17:46 | 12h 0m | 82° |
October | 05:32 | 17:41 | 12h 8m | 85° |
November | 05:27 | 17:43 | 12h 16m | 77° |
☀️December | 05:36 | 17:56 | 12h 20m | 72° |
Summer Solstice
12.3h daylight
Winter Solstice
11.7h daylight
Explore Nearby Cities
Sunlight data for surrounding areas
Frequently Asked Questions
Sunlight in Teresina
1How many hours of sunlight does Teresina get?
How many hours of sunlight does Teresina get?
Teresina receives an average of 12 hours of daylight per day. This varies throughout the year, from 11.7 hours on the shortest day to 12.3 hours on the longest day.
2What is the sun angle in Teresina during winter?
What is the sun angle in Teresina during winter?
During winter solstice, the sun reaches a maximum altitude of only 61.5° above the horizon at solar noon in Teresina. This creates shadows that are 0.5x the height of objects.
3When is the best time for outdoor activities in Teresina?
When is the best time for outdoor activities in Teresina?
October through March offers the longest days and highest sun angles in the Southern Hemisphere.
4How do I plan a garden in Teresina for maximum sunlight?
How do I plan a garden in Teresina for maximum sunlight?
North-facing gardens receive the most consistent sunlight year-round in Teresina. Consider shadow patterns from neighboring structures when planning outdoor spaces.
5What time is golden hour in Teresina?
What time is golden hour in Teresina?
In March, golden hour in Teresina occurs in the morning from 05:58 - 06:58 and in the evening from 17:01 - 18:01. These times shift throughout the year as sunrise and sunset times change.
6What is the UV index in Teresina?
What is the UV index in Teresina?
The UV index in Teresina varies by season. During summer, UV can reach 14 (very high), while winter UV levels are much lower. Always check daily UV forecasts and wear SPF 30+ sunscreen during peak hours (10am-4pm).
7Are solar panels worth it in Teresina?
Are solar panels worth it in Teresina?
Teresina receives approximately 2,415 hours of sunshine annually. This makes it a good location for solar panels, with typical payback periods of 5-10 years. For optimal performance, orient panels north at a 5° tilt angle.
8When is sunrise and sunset in Teresina?
When is sunrise and sunset in Teresina?
In March, sunrise in Teresina is around 05:58 and sunset is around 18:01, giving 12.1 hours of daylight. The earliest sunrise occurs around the summer solstice (05:39) and latest sunset follows shortly after.
9What is the best month to visit Teresina for weather?
What is the best month to visit Teresina for weather?
For optimal daylight and outdoor conditions in Teresina, October through March offers the longest days and highest sun angles in the Southern Hemisphere. The shoulder seasons often offer a good balance of pleasant weather and fewer crowds.
10How long are shadows in Teresina?
How long are shadows in Teresina?
Shadow length varies dramatically by season in Teresina. At summer noon, shadows are only 0.3x the height of objects (sun at 72°). In winter, shadows extend to 0.5x object height (sun at just 62°).