Other facts from our historical weather data: Which months have the greatest rainfall in Ardrishaig? Most rainfall (rainy season) is seen in January, February, October, November and December. Which is the warmest month in Ardrishaig? August has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Ardrishaig? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in Ardrishaig? December tops the wettest month list with 191mm (7.5 in) of rainfall. Which is the driest month in Ardrishaig? May is the driest month with 95mm (3.7 in) of precipitation. Which is the sunniest month in Ardrishaig? May is the sunniest month with an average of 189 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.