1st - start of Meteorological Summer
1st - 30th - The Wildlife Trust's annual nature challenge - 30 Days Wild.
5th - World Environment Day
8th - World Oceans Day
9th - Coral Triangle Day, Solomon Islands
13th - LEAF (Linking environment and farming) Open Farm Sunday
14th - Stop Live Transport International Animal Awareness Day - tbc
15th - Global Wind Day
17th - UN's World Day to combat desertification and drought
20th - Fathers Day
21st - Summer Solstice - start of astronomical summer
21st - World Giraffe Day
22nd - National Insect Week
22nd - World Rainforest Day
24th - Mid-Summers Day. Feast of John the Baptist. Celtic lore: flowers will appear to those who stand under an elder tree on midsummer's eve.
24th - Full moon.
27th June - 5th July - United Kingdom Week for the Animals