July is the seventh month of the year in the Gregorian Calendar and one of seven Gregorian months with the length of 31 days. It is, on average, the warmest month in most of the Northern hemisphere (where it is the second month of summer) and the coldest month in much of the Southern hemisphere. The second half of the year commences in July. The birthstone for July is a red ruby.

In the Northern hemisphere:

• Dog days begin in early July, when the hot sultry weather of summer usually starts.
• Summer school is under way for many students.
• Spring lambs, born in late winter or early spring, are usually sold before July 1st.

July was renamed for Julius Caesar, who was born in that month. Previously, it was called Quintilis in Latin, since it was the fifth month in the ancient Roman calendar, before January became the first month of the calendar year (the year when displayed as twelve months in order) during the time of the decemvirs about 450 BC. In the ancient Roman calendar the ides of July fell on the 15th day of the month.

July starts on the same day of the week as April every year, and January in leap years.

Events in July

• The traditional period known as "fence month" (the closed season for deer in England) ended July 9 (date varied)
• End of the Trinity term (sitting of the High Court of Justice of England) July 31
• Elections of Japanese House of Councillors, replacing half of its seats, held every three years.
• The Major League Baseball All-Star Game is played in the middle of July on a Tuesday. The days surrounded the All-Star Game, Monday and Wednesday are the only days in a calendar year where there are no Major Sport games being played.

Holidays in July

• Canada Day (formerly Dominion Day) July 1
• Hong Kong SAR Establishment Day in Hong Kong SAR, People's Republic of China July 1

• Independence Day in Belarus July 3
• Independence Day in the United States of America July 4
• Tanabata July 7
• Bon Festival in Japan, July 13-16 (dates vary)
• 12th July (Battle of the Boyne) ( Orangemen's Day) in Northern Ireland & Republic of Ireland
• Bastille Day July 14
• Foundation Day in Cleveland July 22
• Pioneer Day in Utah July 24
• Constitution Day (Occupation Day) in Puerto Rico July 25
• Feast of St. James July 25
• Independence Day in Maldives July 26
• Foundation Day in Baltimore July 30