Due to its sheltered location, Kalkan is one of the hottest locations on the southern coast of Turkey in summer and mildest in winter. March and April can be great months to explore the area, with cooler daytime temperatures around 15-20 degrees sometimes accompanied by a short springtime shower. At this time of year, the mountains are lush with springtime flowers, just perfect for walking holidays or getting around the historic sites.
May brings with it the start of summer and this is when temperatures slowly start to rise through the 20s to reach 29/30 degrees by the beginning of June.
Summer temperatures generally peak from the middle of July to the end of August when they can reach well into the 30s.
September tends to be when the temperature starts to slowly come down, with highs in the mid to late 20s and night times becoming more personable.
October sees the temperatures slowly fall again, and come the end of October a lightweight cardigan or jacket may be required at night. This is another great time to explore the surrounding areas and historical sites without intense sun.
The sea and pools however are generally warmer in the Autumn than in the spring, this is due to the water normally taking on the air temperature approximately 2 months later, so in October the sea temperature is similar to an August day.
During the winter months of November to March, the weather still has many good periods. In particular, November and December can see daytime temperatures in the 20s, warm enough to still swim in the sea, however, when the sun goes down it is wise to have warmer clothes to adorn.
The wettest period is usually January into mid-February when heavy but short-lived rain storms can be expected.
The main tourist season is from the beginning of May through to the end of October. If you visit outside these months you may find a more limited range of shops and restaurants open and some facilities like the beach clubs closed.