How Many Days Until Summer

When does summer start?

Astronomical summer

• June solstice: Summer officially begins on Saturday, June 21, 2025 in the Northern Hemisphere
• Exact time: Use a seasons calculator for precise timing in your area
• Marks the longest day of the year in the Northern Hemisphere

Meteorological summer

• Fixed dates: Starts on June 1 and ends on August 31 every year
• Used by meteorologists for consistent seasonal statistics
• Easier for calculating temperature and precipitation data

Countdown to summer 2025

• 269 days until astronomical summer (June 21, 2025)
• 251 days until meteorological summer (June 1, 2025)
• Solar summer: Centered around May-July, with the solstice at the midpoint

Summer characteristics

• Warmest season: Falling between spring and autumn
• Higher temperatures and often drier conditions
• Longer daylight hours, especially near the summer solstice

Regional variations in summer start dates

• Tropical regions: May experience a wet season during summer
• Southern Hemisphere: Summer occurs from December to February
• Some Asian countries: Summer defined as March to early June

Summer solstice celebrations

• Stonehenge, England: Watch the sunrise align with ancient stones (June 20-21, 2025)
• Sweden: Midsommar festivities with maypole dancing and traditional games
• Peru: Inti Raymi festival in Cusco celebrating Incan heritage

FAQ

How many days until summer?

There are 269 days until astronomical summer in the Northern Hemisphere, which starts on June 20, 2025. For meteorological summer, there are 251 days until it begins on June 1, 2025.

When does summer start?

Summer officially starts on Saturday, June 21, 2025, in the Northern Hemisphere. This is the astronomical summer start date. Meteorological summer begins earlier, on June 1, 2025.

What's the difference between astronomical and meteorological summer?

Astronomical summer is based on the Earth's position relative to the sun and starts on the June solstice. Meteorological summer uses fixed dates (June 1 to August 31) for consistent seasonal statistics.

Is the countdown to summer the same everywhere?

No, the countdown to summer varies by hemisphere and region. While the Northern Hemisphere experiences summer from June to August, the Southern Hemisphere's summer is from December to February.

How can I track the exact countdown to summer?

You can use online season calculators or countdown timers to track the precise time until summer begins in your specific location. For the Northern Hemisphere, count down to June 21, 2025, for astronomical summer or June 1, 2025, for meteorological summer.