Natural and artificial pools

Texas, May–September

Egypt, October–April

Hungary, November–March

Scotland, October–November

China, June–August

Canary Islands, March–November

New Zealand, June–August

Berlin, May–September

Oslo, June–August

Madrid, mid-May–mid-September

Zambia, mid-August–mid-January

Turkey, April–mid-June

Fiji, all year round

Iceland, June–August

Sydney, all year round

Florida, May–September

Mexico, all year round

Iceland, mid-May–mid-August (all year round)

California, March–early June | September–December

Western Australia, November–May

New Mexico, all year round

Oregon, June–August

Shanghai, late June–early September