February is the coldest month of the year in Guam, with the average temperatures in the warm 75°F (23.9°C) to 85°F (29.4°C) range. The daily sunlight lasts for 6 hours, and the conditions are comfortable relative to the usually hot and humid atmosphere. The precipitation averages 4.5" (114mm) and is generally lighter than the wet season so that a rain jacket is optional. Hagatna (Agana), the capital in central Guam, sees relative humidity between 73 to 78%, with daily high temperatures rarely touching 90°F (32.2°C). Seawater temperatures are perfect for swimming, while snorkeling and scuba diving are just the right activities to explore the exciting underwater world. Sunset cruises are popular in the peaceful realm as the waters remain calm in the absence of storms. Cozy nights provide a perfect environment for fun-filled entertainment. The lack of heavy rainfall makes February the most desirable month for tourism in Guam and costliest on the wallet.