Other facts from our historical weather data: When is the rainy season in Bottle Beach? Rainy season in Bottle Beach occurs in the months of May, September, October and November. Which is the hottest month in Bottle Beach? May has an average maximum temperature of 31°C (88°F) and is the hottest month of the year. Which is the coolest month in Bottle Beach? The coolest month is January with an average maximum temperature of 29°C (84°F). Which is the wettest month in Bottle Beach? October tops the wettest month list with 320mm (12.6 in) of rainfall. Which is the driest month in Bottle Beach? February is the driest month with 43mm (1.7 in) of precipitation. Which is the sunniest month in Bottle Beach? March is the sunniest month with an average of 240 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.