When is the first day of summer 2015? Get information on the 2015 summer solstice facts—plus, fun ways to enjoy summer!
What's your favorite image of summmer?
Click here for our slideshow of summer scenes by Almanac readers .
The Summer Solstice
The summer solstice heralds the beginning of summer in the Northern Hemisphere. The timing of the summer solstice depends on when the Sun reaches its northernmost point of the equator.
In 2015, the summer begins with the solstice on June 21 at 12:38 P.M. EDT. This year, Father's Day  is also celebrated on the 21st!
The word solstice is from the Latin solstitium, from sol (sun) and stitium (to stop), reflecting the fact that the Sun appears to stop at this time (and again at the winter solstice).
In temperate regions, we notice that the Sun is higher in the sky throughout the day, and its rays strike Earth at a more direct angle, causing the efficient warming we call summer.
This summer solstice is the day with the most hours of sunlight during the whole year. See our handy Sunrise and sunset calculator  for how many hours of sunlight you get in your location.
At the winter solstice , just the opposite occurs: The Sun is at its southernmost point and is low in the sky. Its rays hit the Northern Hemisphere at an oblique angle, creating the feeble winter sunlight.
7 Ways to Celebrate Summer
How will you celebrate the solstice and all that extra daylight? Here are 10 ideas from our General Store:
- Go fishin': We love to get out on the water. Consult our free Best Days for Fishing  chart—plus, tackle-box and bait tips.
- Have a picnic or big cook-out on the solstice. See our great grilling recipes !
- Camp in the great outdoors. Don't forget the best natural insect repellent on Earth .
- Listen to songbirds: We love our feathered friends. Attract birds to your garden with our beautiful bird feeders .
- Let the light in! With all this extra daylight, hang one of our gorgeous suncatchers for your window or porch.
- Temperatures rise and lazy days ensue. Relax and read a book! See our great books and guides .
- Gaze at the stars! To find out what's shining in the night sky, click for our free monthly Sky Map .
Did You Know?
Question: Why isn’t the summer solstice, the longest day of the year, also the hottest day of the year?
Answer: Earth’s atmosphere, land, and oceans absorb part of the incoming energy from the Sun and store it, releasing it back as heat at various rates. Water is slower to heat (or cool) than air or land. At the summer solstice, the Northern Hemisphere receives the most energy (highest intensity) from the Sun due to the angle of sunlight and day length. However, the land and oceans are still relatively cool, due to spring’s temperatures, so the maximum heating effect on air temperature is not felt just yet. Eventually, the land and, especially, oceans will release stored heat from the summer solstice back into the atmosphere. This usually results in the year’s hottest temperatures appearing in late July, August, or later, depending on latitude and other factors. This effect is called seasonal temperature lag.
Question: What is Midsummer Day (June 24)?
Answer: Around the time of the summer solstice, this day was the midpoint of the growing season, halfway between planting and harvest. Read more about the ancient Quarter Days !
In Sweden, people celebrate the Summer Solstice by eating the first strawberries of the season.
In ancient Egypt, summer was the start of the new year. The rising of the star Sirius roughly coincided with the summer solstice and the annual flooding of the Nile River.
Deep snow in winter, tall grain in summer.–Estonian proverb
When the summer birds take their flight, goes the summer with them.
If it rains on Midsummer's Eve, the filbert crops will be spoiled.–Unknown
One swallow never made a summer.
Easterly winds from May 19 to the 21 indicate a dry summer.
If there are many falling stars during a clear summer evening, expect thunder. If there are none, expect fine weather.
What does summer mean to you? Share your comment below!