Less obvious summer destinations where you might catch something at the last minute include Iceland, where there are still gloriously long days – and migrating whales can be seen in the surrounding waters. Warmer weather also means great conditions for hiking. But be sure to pack mosquito repellent! Keep Borneo on your radar at this time of year too because, although much of South East Asia has monsoon at this time, this is one of its driest seasons, so the best time for visiting the rainforest and Mt Kinabalu. Similarly, Sri Lanka has monsoon in the southwest at this time of year, although it should be drawing to a close in August. However, the northeast of the country escapes it, and it also has very undeveloped beaches, as it was closed to tourism for years due to war, which ended in 2009. In terms of tranquility you will always find empty beaches and lakesides in Canada or Alaska. Or head to the lesser known USA national parks, with most of the crowds heading to Yellowstone or the Grand Canyon.

If you are lucky enough to see last minute availability on wildlife wonders such as Arctic expedition cruises or safaris in South Africa or Namibia, grab them. This is a perfect time to catch the wildlife at its most active, but they do book up way in advance, so last minute tickets are golden ones.

People in the know, and those who are lucky enough not to be controlled by school holiday restrictions, can make the most of the fact that this is often the magic month for holidays in so many parts of the world. And you have more chance of getting a flight at the last minute as well so, all in all, happy (holi) days. The B-team is particularly strong in September, being the top time of year to visit Brazil, Borneo and Botswana.

The Mediterranean countries have cooled just enough to make hiking and cycling survivable, and yet the sea is still gorgeously welcoming after a workout on the highways and byways. And some of the less obvious European destinations are still very much open for business at this time of year too, such as Romania, where you can start to catch the autumn foliage changing as you hike through its colossal Carpathians. Outdoor activities in Scotland and Ireland during this time are also wonderful with highlands and islands particularly tranquil.

Staying north, this is also one of the best months to see the Northern Lights in Iceland, as they're said to be more likely around the equinoxes. There's still some daylight, meaning you can get out and do other activities. Norway can also have some lovely mild weather at this time, along with very long daylight hours – and few other visitors.

This can be a tricky month when it comes to late availability as it can be quiet early on in terms of bookings, but then school half term creeps up on us at the end of the month, and so it can be harder to book transport. Or, of course, the early birds have got the worms. Morocco is one of our favourite places in October, as the searing desert temperatures have subsided, the sea is warm, and the mountains are still snow-free. Lanzarote is still lovely too, and Andalucia, Croatia, Greece, southern Italy, southern Portugal and Turkey's southern and western coasts also still have great weather for cycling, hiking or water-based activities – while avoiding the summer crowds and prices.

October brings balmy beauty to Northern Vietnam, Burma and Southern India and, for perfect hiking conditions, Nepal is the place to go at this time, so look out for any injured parties having to drop out of the big treks at the last minute – if you are fit and ready to go that is.

You won’t need any training to take in the Northern Lights, however, in Iceland where the days are still long enough for you to engage in other activities such as hiking and exploring the glaciers, lava fields and gorgeously hot pools. Being on the equator, you'll be told that Ecuador has no "best time to go" as its climate is pretty constant. However, we think October is a great time as you'll miss the summer school holiday crowds. This is also the drier season, so the Amazon is more accessible and wildlife more easily viewed.

And for a closer to home winter soak in the sun, the Canary Islands are still beautifully balmy, with places like Gran Canaria, Lanzarote, La Gomera hiking heaven at this time of year. Andalucía is also lovely, with cool, sunny days making it great for a walking or cycling holiday.

At the other end of the spectrum, now's the time to head to Antarctica for pristine snowscapes and the largest icebergs, before the summer warmth kicks off a giant thaw. But these trips do book up, so if you can catch last minute availability and you are in expedition, carpe diem-mode, grab this chance of a lifetime.

Another trip of a lifetime is a gorilla trekking holiday. As November is not the peak season for this, being the rainy season, places can come up. You won’t be poured on all day at all, just in spurts, but you won’t even think about it when you set your eyes on your first gorilla family. And you will have the forests and mountains to yourself, the guides and the gorillas. If you can catch a ticket to Madagascar the place, not the movie, the scenes with the baby lemurs are priceless during this time. And although the season of short rainfall is starting in Kenya, Tanzania and South Africa, it is still a great time to go, as the national parks are quieter. Ergo, more last minute availability.