Fortress of Louisbourg
Louisbourg, Canada

The Fortress of Louisbourg is a fortress and a National Historic Site of Canada located in the Cape Breton region. It is one of the 93 sights of Canada featured on this site and is ranked 46th among the country's sights for English Wikipedia lookups.
Planning a visit
The warmest months are July and August, with daily highs of 20 °C and 21 °C. The coldest period is from January to March, when daily highs stay at or below 1 °C and lows reach -8 °C. Rainfall is distributed throughout the year, with the highest amounts occurring in December at 167 mm and November at 162 mm. Most months see about 13 to 17 rainy days.
Sydney / J.A. Douglas McCurdy Airport is the nearest airport, located 30 km away. Halifax / Stanfield International Airport is approximately 297 km from the site. The fortress is 1,220 km from the capital, Ottawa.
Weather by month
The warmest month is August, with an average high of 21 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | -1 | -1 | 1 | 5 | 10 | 15 | 20 | 21 | 18 | 12 | 8 | 3 |
| Average low, °C | -7 | -7 | -4 | 0 | 4 | 10 | 15 | 16 | 13 | 8 | 3 | -2 |
| Rainfall, mm | 150 | 131 | 130 | 137 | 118 | 113 | 108 | 116 | 135 | 160 | 162 | 167 |
| Rainy days | 14 | 14 | 14 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 17 | 17 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.