Things to Do in Gibraltar in September 2026
September 10 is National Day. Whole territory wears red and white. Genuinely worth scheduling around.
Weather
Warm. 22-28°C, occasional rain late in the month. Sea is at its warmest, 24°C. Days shortening but still long.
Crowds
Easing. Schools return mid-month. Cruise season continues but Spanish holiday crowds have gone.
What to wear
T-shirts in the day, light jumper in the evening as the cool starts to come back.
What to do in September
- ▸ National Day celebrations on 10 September.
- ▸ Mediterranean Steps in cooling weather.
- ▸ Sea swimming at peak temperature.
- ▸ Gibraltar Rock Run or local sporting events.
- ▸ Best month for serious dolphin watching, fewer cruise crowds.
Events this month
- 📅 National Day (10 September) - the big one
- 📅 Mediterranean Equinox events around the third week
💡 Book ahead
Pre-book hotels around 10 Sept. Otherwise, much more relaxed.