Continuation of summer peak travel; many North American cities and coastal destinations are crowded. Hurricane risk is often highest from August through September in the Atlantic basin, so monitor forecasts for Caribbean and Gulf trips. Northern Canada has long daylight hours and is a good time for remote northern travel.
Average daily low and high (°C) and monthly rainfall, from each country's largest city. The badge shows how it feels, allowing for humidity.
Average temperature across North America in August.
Northern Canada, Alaska, Greenland
For much of August the Arctic still feels summery: sea-ice retreats are typically at their maximum, allowing wider cruise and kayak routes through the Canadian Archipelago and along Greenland’s west coast. Weather is generally mild but changeable with sudden fog or rain squalls; boat and shore schedules can shift. Travelers should plan flexibility in itineraries and confirm local transport, as services taper toward the end of the month.
Pacific Northwest, British Columbia, Yukon south, California coast, Cascades, Sierra, Rockies foothills
September typically delivers some of the region’s best weather: coastal fog recedes, inland heat fades and clear, dry days become common - ideal for outdoor activities from Vancouver to Lake Tahoe. Fall colors begin at higher elevations in the Rockies and Sierra, and the shoulder season reduces crowds and often brings lower accommodation prices. Still carry a light jacket for cool evenings and monitor local beach or trail advisories for any lingering smoke.
Baja California, Sonoran & Chihuahuan Deserts, Arizona, New Mexico, northern Mexico states
Thunderstorms and heat are still prominent in August, with localized heavy rain events and high humidity in places like Tucson and Saltillo; monsoon activity can persist into early autumn. This is also the eastern Pacific hurricane season - Baja California, Sonora and Sinaloa can be affected by tropical storms or their remnant moisture. Travelers should monitor local alerts, avoid flooded roads, and prefer morning outings over afternoons.
Canadian Prairies, US Plains & Midwest: Saskatchewan, Manitoba, North Dakota, South Dakota, Nebraska, Iowa, Illinois, Minnesota, Wisconsin, Missouri
August maintains summer warmth but begins a slow trend toward less humidity and fewer storms late in the month; harvest activity kicks into place in the Prairies and Plains. Lakefront recreation remains popular, and early‑season football and cultural events increase urban tourism. Heatwaves remain possible, so plan outdoor activities for mornings and evenings and be ready for sudden storm development.
New England, Quebec, Newfoundland & Labrador, Nova Scotia, Prince Edward Island, New Brunswick
August remains warm and popular for tourism, with busy coastal towns, music festivals and peak ferry traffic across the Maritimes and New England. Late-summer thunderstorms are possible but usually short‑lived; water temperatures along the Atlantic remain cool for many swimmers. This is peak season for historic town visits and coastal cruises, so reserve lodgings well in advance.
Florida, Gulf states, Yucatán, Belize, Guatemala, Honduras, Nicaragua, Costa Rica, Panama, Greater Antilles, Lesser Antilles
August continues the hot, humid pattern and is often the most active month for tropical development in the Atlantic basin: hurricanes and tropical storms can affect the Caribbean, Yucatán and Gulf coasts. Beyond storm risk, afternoon rains make mornings the best time for inland hikes and reserve coastal activities for clear days. Bring robust travel insurance and flexible plans during this month.
There are no major festivals or events in North America during August to be aware of.
See how August compares with the rest of the year, then read the full guide.