Best Time to Visit County Mayo, Ireland

Thanks to its temperate coastal climate, County Mayo can be visited year-round. However, for the most pleasant weather, plan your trip between May and September.

Seasonal Highlights

• Summer (Jun–Aug): Long days (up to 18 hours of daylight), mild temperatures (15–20°C / 59–68°F), and the best chance for sunshine—though rain is always possible.
• Shoulder months (May, Sep): Fewer crowds, blooming landscapes (May) or autumn colors (Sep), still mild.
• Winter: Cool, wet, and windy, but dramatic scenery and cozy pubs.

Even on rainy days, Mayo's rugged coastline, mountains, and lakes (like Lough Mask and Lough Conn) offer a unique, moody beauty.