Black flies/mosquitos

Question

Heading to Isle Royal this weekend and wondered how the flies and mosquitoes have been? Would you suggest mosquito netting?

Answer

Isle Royale National Park is beautiful this time of year, but you should be prepared for insects, especially if you’re heading out into more remote areas or near water sources.

Black flies and mosquitoes are generally still active in early September, though they start to taper off compared to peak summer months. Conditions can vary depending on recent weather—cooler or windy days reduce insect activity, while warm and humid conditions can make them more persistent.

Here are some practical tips:

Insect repellent: Use a strong repellent containing DEET, picaridin, or oil of lemon eucalyptus. Apply it to exposed skin and clothing.
Clothing: Long sleeves, long pants, and light-colored clothing help reduce bites. Consider tucking pants into socks for extra protection.
Mosquito netting: Highly recommended if you’re camping or sleeping in areas where bugs are present. Many campsites or cabins have screens, but carrying a personal net can ensure comfort and protection.
Timing: Insects are often most active in the morning and evening. Planning activities outside of these peak times can help minimize exposure.

Other helpful tips include using head nets for heavy black fly days and treating gear with permethrin for added protection. Even in early September, having some protection will make your trip much more enjoyable.

Overall, mosquito netting isn’t strictly necessary if you’re staying in screened facilities, but it can be very useful for tents, lean-tos, or hikes near wetlands.

Black flies/mosquitos

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