La Palma: Why go
Of all the Canary islands, this is the least developed and the most scenically spectacular. There are wild black-sand beaches, jagged-peaked volcanoes which still breathe wisps of smoke, huge tracts of pine forest, and plenty of those pretty pastel villages which the Canarians do so well. Best of all, there is very little development, apart from a couple of resorts around Puerto Naos. The pace of life is slow and very friendly, but with a welcome layer of orderliness from the now-grown-up German hippies who escaped there decades ago, and these days live in handsomely restored stone houses while their kids go to local schools.
Like most of the Canary islands, La Palma's climate is pretty warm and sunny all year round, but with a chance of localised cloud cover, rainstorms or even occasional snow over the high ground (the tallest peaks reach nearly 2,500m / 8,000 ft which is quite something for an island just 5 miles wide). The sunniest part tends to be the south, with clouds most likely over the breathtaking cirque of the 'Caldera de Taburiente'; but that can occasionally switch round with the prevailing wind.
Its capital, Santa Cruz (de la Palma), has a quite unexpectedly sleepy and tranquil charm, despite being the island's main port for passenger and commercial ships. Overlooking the fertile west coast - most of it dominated by banana plantations - Los Llanos (de Aridane) is the island's largest town; if you penetrate its modern suburbia, you'll find a charming colonial centre of rainbow-coloured houses and pedestrian lanes which (like most of the island) comes noisily alive at carnival time (February).
Sadly, the wildfires of 2016 destroyed much of the fir forest covering the southern third of the island's uplands. But there are still wonderful forests and tropical flowers in the centre and north, with great hikes on waymarked trails. Do bear in mind that, in winter, it can be cool and cloudy, with occasional snowfall on the summits; while summers can be blisteringly hot. Also, the sea is not always swimmable due to incoming breakers and swell; but there are some sheltered beaches (e.g. Tazacorte) and sea-fed pools (e.g. La Fajana) for safe swimming at any time. Finally, as on most Canary islands, the food is not perhaps as exotic and varied as you might hope - think fried fish, meaty stews, all served with papas arugadas (local new potatoes) and mojo (variants of aioli).
If you can't find a direct flight, you may have to overnight in Gran Canaria or Tenerife on the way; and, if the latter, bear in mind that the domestic airport is 2 hours drive from the international one.