Sendai Sunrise & Sunset: December 2026

December Sunrise & Sunset in Sendai: Complete Monthly Guide

In December 2026, Sendai has an average of 9h 33m of daylight per day. Sunrise times range from 06:35 at the start of the month to 06:54 at the end, while sunset shifts from 16:18 to 16:26.

December in Sendai brings short winter days with early sunsets. Average sunrise in December is 06:47 and average sunset is 16:18. The daily table above shows the exact sunrise and sunset time for each day of the month.

Day Length Variation in December

Day length in Sendai in December changes throughout the month. Near the solstices (June 21 for the northern hemisphere, December 21 for the southern hemisphere), day length changes very slowly, less than 1 minute per day. Near the equinoxes (March 20 and September 22), day length changes rapidly, gaining or losing 2 to 4 minutes per day depending on latitude.

At Sendai's latitude of 38.3°, the rate of day length change in December is approximately 2 to 3 minutes per day during the weeks furthest from the solstices. This means that sunrise in Sendai shifts by approximately 40 to 60 minutes over the course of December.

Golden Hour in Sendai in December

Golden hour in Sendai in December occurs twice each day: in the morning shortly after sunrise, and in the evening before sunset. The duration depends on the sun's angle of elevation above the horizon, which varies with latitude and month. In Decemberat Sendai's latitude of 38.3°, golden hour lasts approximately 40 to 65 minutes.

For photographers planning shoots in Sendai in December: plan to arrive at your location 30 to 40 minutes before the listed sunrise time to capture blue hour before golden hour begins. The transition from blue hour to golden hour creates the most dramatic color sequences. Evening golden hour in December begins about 45 to 60 minutes before sunset and produces warmer, more orange tones than the morning session.

Blue Hour and Twilight in Sendai in December

Civil twilight in Sendai in December begins before sunrise and ends after sunset, creating windows of usable natural light even outside the official sunrise-to-sunset window. Civil twilight occurs when the sun is between 0 and 6 degrees below the horizon. Nautical twilight spans 6 to 12 degrees below the horizon. Astronomical twilight spans 12 to 18 degrees below the horizon.

The total twilight window in Sendai in December extends the usable light day by approximately 45 to 70 minutes beyond the sunrise-to-sunset window. This extended twilight is valuable for photographers who want to shoot in soft, diffused light without harsh shadows.

Photography Tips for December in Sendai

Shooting in Sendai in December requires adapting to the season's specific light quality and timing. Camera settings for sunrise photography in December:

• Blue hour: ISO 800 to 1,600; aperture f/8; shutter speed 10 to 30 seconds on tripod.
• Golden hour: ISO 100 to 400; aperture f/8 to f/16 for landscapes, or f/1.8 to f/2.8 for portraits; shutter speed 1/250 to 1/1,000s handheld.
• Post-sunrise (30 minutes after): ISO 100; aperture f/11; shutter speed 1/500 to 1/2,000s.

In December, Sendai's weather patterns affect photography conditions. Check cloud cover forecasts the evening before a planned shoot: a thin layer of clouds above the horizon creates more dramatic golden and orange tones than a clear sky. Fully overcast conditions produce flat, diffused light that is good for portraits but lacks the dramatic quality of golden hour. Partly cloudy skies create the most dramatic conditions.

About This Monthly Sunrise Data

All sunrise and sunset times in this December table for Sendai are calculated using Jean Meeus astronomical algorithms, implemented via the SunCalc library. Calculations use the coordinates of Sendai (38.2682°, 140.8694°) and the local timezone (Asia/Tokyo). Times are accurate to within 1 minute and account for atmospheric refraction.

The times shown are for the center of the sun crossing the horizon. Sunrise is defined as the moment when the upper limb of the sun first appears above the mathematical horizon. Sunset is when the upper limb disappears below the horizon. Both definitions account for atmospheric refraction, which lifts the apparent position of the sun by approximately 0.5 to 1 degree near the horizon.

Frequently Asked Questions: December Sunrise & Sunset in Sendai

What is the average sunrise time in Sendai in December?

The average sunrise time in Sendai in December 2026 is approximately 06:47. This is based on the mid-month calculation for Sendai at latitude 38.27° and longitude 140.87°. Actual daily sunrise times vary from 06:35 on the first of the month to 06:54 on the last day. See the full daily table above for exact times.

How many hours of daylight does Sendai get in December?

Sendai receives an average of 9h 33m of daylight per day in December 2026. This is calculated as the difference between sunrise and sunset and does not include twilight periods. Day length varies from 9h 43m on the first of the month to 9h 32m on the last day.

What is the earliest sunrise in Sendai in December?

The earliest sunrise in Sendai in December 2026 occurs on 2026-12-01 at 06:35. The latest sunrise in the month occurs on 2026-12-30 at 06:54.

What time is golden hour in Sendai in December?

Golden hour in Sendai in December occurs twice daily. Morning golden hour begins at sunrise (06:47 at mid-month) and lasts approximately 40 to 65 minutes. Evening golden hour begins approximately 45 to 60 minutes before sunset (16:18 at mid-month). The precise start of golden hour is when the sun's altitude drops below 6 degrees above the horizon.

Is December a good time to photograph sunrise in Sendai?

December offers late sunrise times in Sendai (around 06:47), which is convenient for photographers. Winter light is crisp and directional, and clear cold mornings often produce vivid color in the sky before and during sunrise.

When does civil twilight start in Sendai in December?

Civil twilight in Sendai in December begins approximately 20 to 30 minutes before sunrise and ends 20 to 30 minutes after sunset. At Sendai's latitude of 38.3°, civil twilight in December starts around 06:22 in the morning. Civil twilight provides enough light for outdoor activities without artificial lighting and is considered the beginning of the usable photography window each day.