Why 'best time to visit' advice is usually wrong
Most travel articles answer the question "when is the best time to visit Tokyo?" with a confident answer: cherry blossom season in late March and early April. This is the correct answer if your top priority is seeing cherry blossoms. It's the wrong answer if your priorities are:
- Avoiding the most expensive flights of the year - Not standing in a 45-minute queue at Shinjuku Gyoen - Experiencing the city the way residents actually live in it - Going in May, when golden hour light is extraordinary and the crowds have thinned
'Best time to visit' is always a function of what you're optimising for. Before you search for advice, identify your actual priorities. Then the question becomes answerable.
The four things that determine when to go
1. Weather. The most obvious factor — but 'good weather' means different things in different destinations. 'Good weather' in Iceland means wind speeds below 50km/h and a reasonable chance of northern lights. 'Good weather' in Thailand means low humidity and no risk of typhoons. Research the specific weather conditions you want, not just 'dry season'.
2. Crowds and prices. Peak season, shoulder season, and off-season are the same dates everywhere: peak is when the most people go (school holidays, events, festivals), off-season is when the fewest go, and shoulder is everything between. Peak = highest prices + fullest sights. Off-season = lowest prices + some sights may be closed or at reduced hours. Shoulder is usually the optimal balance.
3. Events. Major events — Carnival in Rio, Songkran in Thailand, the Siena Palio, the Edinburgh Festival — can be either the reason to go or the reason to avoid. Either way, they affect accommodation availability and price significantly, and they change the character of the destination.
4. Your own calendar. Flight prices are highest at the most popular departure times (Christmas, Easter, school half-terms). If you have flexibility, shifting your departure by 5-7 days either side of a peak period can reduce flight costs by 30-40% with no practical downside to your experience.
How to find the actual best time for a specific destination
Step 1: Look up the climate data. Not 'best time to visit' articles — actual monthly climate data. Average temperature, average rainfall days, humidity. Climate-data.org has this for every destination in the world. Look for the months with fewest rain days and temperatures in the range you're comfortable with. That's your weather window.
Step 2: Cross-reference with school holidays. In the UK: Easter, mid-July to early September, and Christmas. In the USA: June-August, Thanksgiving week, and Christmas. Avoid arriving in a major tourist city at the start of peak school holidays. You'll pay peak prices for worse conditions.
Step 3: Check for major events. A quick search of '[destination] events [month]' will surface major festivals, marathons, sporting events, and conferences that can double hotel prices and change the atmosphere significantly. Sometimes you want to be there (Oktoberfest, Carnival). Sometimes you actively don't (a major trade show that fills every hotel in Barcelona with corporate delegates).
Step 4: Check flight prices for 12 months. Google Flights has a price calendar that shows fare variation across an entire year. The cheapest window is usually 2-3 months before and after the peak. Book 6-8 weeks in advance for domestic flights and 2-4 months in advance for long-haul.
The shoulder season case
Shoulder season — the period just before or just after peak — is consistently underrated by travellers and consistently recommended by everyone who's experienced it.
Paris in late September: summer tourists gone, but warm enough for outdoor cafés, exhibitions are open, and hotels are 20-30% cheaper than August. Bali in October: the tail of the wet season, so occasional afternoon rain, but accommodation half the price of July-August and beaches that you can actually find space on. Japan in May: after the cherry blossom crowds, green mountains, comfortable temperatures, and the same extraordinary food, transport, and culture.
The ideal shoulder season formula: take the destination's peak month, go one month either side, and book everything that requires reservations (popular restaurants, specific activities) in advance. You get the experience without the price or the crowds.
When to book vs when to go
These are different questions that get conflated. When to *go* is about the destination conditions (weather, crowds, events). When to *book* is about securing the best prices and availability.
Flights: Long-haul international flights are typically cheapest 2-4 months before departure. Booking earlier than that rarely saves money (prices fluctuate and often drop); booking later risks selling out or price spikes. The exception is peak periods (Christmas, Easter) where you should book 4-6 months out.
Hotels: Book as soon as your dates are fixed, with free cancellation. Prices for good properties in popular destinations rise as availability narrows. Locking in a rate with free cancellation is always the right move; you can cancel later if something better appears.
Restaurants: For any dinner you care about, book 2-4 weeks in advance for destination restaurants in major cities. Popular places (particularly in Japan, Spain, and Italy) book out weeks ahead. Checking once you arrive and hoping for a table is not a strategy.
A practical timing framework by destination type
Beach destinations (Thailand, Maldives, Caribbean, Bali): Timing is everything — wet vs dry season can mean the difference between perfect swimming conditions and overcast days with afternoon downpours. Always research the monsoon calendar for your specific destination, not just the region.
City breaks (Paris, New York, Tokyo, London): Cities are more season-agnostic than beach destinations. The biggest driver is whether major events or school holidays are causing price spikes. A grey November weekend in Paris is still an excellent Paris weekend.
Mountain and hiking destinations (Swiss Alps, Patagonia, Nepal, Canadian Rockies): Weather windows are narrow and conditions-dependent. Check not just calendar but elevation — high passes that are open in July may be inaccessible in May. Always have a contingency plan.
Safari (Kenya, Tanzania, Botswana): The Great Migration in the Masai Mara peaks in July-October; that's also when prices are highest. The shoulder periods (June and November) offer excellent game viewing at lower prices. The green season (November-March) is cheapest and has incredible bird life and newborn animals.
Cultural festivals (Carnival, Songkran, Diwali, Nowruz): Book 4-6 months ahead. Accommodation near the main celebration areas sells out entirely. Consider staying slightly outside the centre to avoid maximum congestion while still accessing the festivities.
Let live data do the timing for you
The challenge with all the above advice is that it describes averages. The actual weather on the actual dates you travel is specific — and the gap between average and actual matters enormously.
Tripzeeker pulls live 5-day weather forecasts for your travel dates when generating your itinerary, so you can see what conditions are actually predicted rather than what the historical average suggests. This matters most for shoulder and off-season trips where the range of possible conditions is wide.
For flights and hotels, live price data at the time of planning shows what things actually cost right now — not what they cost on average. The combination of live weather and live pricing takes most of the guesswork out of timing, and lets you make the call with real information rather than generalised advice.