Evaporation from wet clothing can cause rapid cooling of body temperature when it is windy.
Windproof clothing (such as a cag) and insulating layers will be necessary in both warm and cold weather and should be easily accessible.
Avoid prolonged immersion in cold water as rapid loss of body heat leads to hypothermia.
Eat high energy snacks and meals that will sustain your energy levels
Always dress for the predicted weather conditions. Strong afternoon sea-breeze may cool body temperature on warm days.
In summer that may mean light clothing (long sleeve tops to protect arms and shoulders) with adequate sun protection (sunglasses for your eyes and sunblock for your skin)