Bonifacio weather in August
August in Bonifacio: sweltering, dry — fine if you can take 36°C afternoons.
Updated September 2026 · climate normals from ERA5 reanalysis
#2 of 12 months in Bonifacio · #60 of 1413 destinations to visit in August · comfort 93/100 (tier S)
- Days
- 32°C
- Nights
- 20°C
- Wet days
- 2
- Sun
- 12.6 h
- Humidity
- 70%
- Daylight
- 14 h

Traveller notes on Bonifacio in August
August in Corsica is the month the forum warns about rather than recommends. The island's population goes from roughly 280,000 in winter to about a million in August, Bonifacio itself gets described as gridlocked, and the small coves fill to the point that regulars call the popular beaches unusable. The heat is the other half of it - high 30s, with nights that do not cool. Wind is the mixed blessing: it takes the edge off, and late August can blow hard on the west and north-west coasts and through the Bouches de Bonifacio, so beach choice becomes a question of waves and flying umbrellas. June and September are what they suggest instead. The record: 32.3C days that feel like 36C, 20C nights, 1.8 precipitation days, 12.6 hours of sun and a 24.9C sea.
Other months in Bonifacio
Asked to compare June with July, regulars pick June on three counts - less heat, fewer people, lower prices - and hedge on one, which is the water. The sea is swimmable and bracing at the same time; our column reads 22.5C, which is the honest version of that. The air is easier, 29C reading as 31C with 8.1mm of rain across 2.3 days and 13.3 hours of sun. What the boards keep mentioning about this stretch of coast is afternoon wind, strong enough that the kitesurfers plan around it; our 22.9 kph is the monthly average behind that. Nights fall to 16.6C, which is a jumper on a terrace. The record: humidity 74 percent and AQI 51.
Forum posters describe Bonifacio as worth a short winter visit, sitting within Corsica's quiet off-season this time of year - posters raised real questions about whether restaurants and other services stay open in late January, suggesting reduced availability compared to peak season. Posters note low-altitude coastal hiking near towns like Bonifacio remains workable weather permitting, a real contrast to the island's mountainous interior which turns much less accessible in winter. Posters generally frame January as a viable option for travelers prioritizing quiet, uncrowded sightseeing over full services, with larger towns like Bastia or Ajaccio suggested as a better base if more amenities and activity options matter more than Bonifacio's clifftop views.
Bonifacio's forum calls July hot, sunny and genuinely busy — regulars say parking fills up early in peak season, though it's a step down from the crowds at Capri or Santorini. Those wanting the same warm, sunny weather with fewer people generally point to June or September instead.
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Bonifacio climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Bonifacio in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsThe August crush, Summer holidays in France, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Bonifacio's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherBonifacio's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Bonifacio in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Opening
Lavezzi boat season
15 Apr – 31 Oct · usuallySummer season opensShuttles and excursion boats to the islands run from the middle of April to the end of October, hourly at the height of summer and on a shorter trip in April and October. Tickets are sold on the quay. Source ↗
- Season
Sea warm enough to swim
10 Jun – 10 Oct · usuallyThe water off the Lavezzi and the beaches east of town is swimmable from June into early October. Wind, not temperature, is what usually decides whether the day happens.
- Hazard
Fire risk and closed massifs
15 Jun – 30 Sep · usuallySmoke seasonClosuresThe prefecture bans fires and outdoor work across Corse-du-Sud into the end of September, and on severe-risk days closes forest massifs inland, Bavella included, to walkers and cars. Source ↗
- Holiday
The August crush
15 Jul – 31 AugSchool holidaysCrowdedBook earlyThe one road up to the citadel is a queue by mid-morning and the marina berths are gone from spring. Restaurants take August bookings weeks ahead and drop the shoulder-season menus. Source ↗
Nearby, and something's on
Within 300 km of Bonifacio — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Bonifacio?
Bonifacio in August — FAQ
- Is August a good time to visit Bonifacio?
- August in Bonifacio: sweltering, dry — fine if you can take 36°C afternoons. It ranks #2 of 12 months for Bonifacio on SeasonMap's comfort score (93/100).
- What is the weather like in Bonifacio in August?
- In August, Bonifacio averages a daily high of 32.3°C and a low of 20°C, with about 9.1 mm of rain over roughly 1.8 rainy days.
- What is the air quality in Bonifacio in August?
- Bonifacio has a mean US Air Quality Index of about 53 in August.
Within 300 km: Ajaccio's Journees Napoleoniennes on 12–15 Aug, and Alghero's Vermentino harvest around 20 Aug – 5 Oct.