Eight Cities Trade the World's Best-Month Crown: We Scored 66 Destinations for All Twelve Months

Every January, travel publishers print a "best places to visit this year" list, and all of those lists have a bug that nobody likes to talk about: best ALWAYS has an asterisk for time of year. A city that is glorious in May can be miserable in September, and an annual list usually finds it hard to say so. TTDI, the city-guide platform we operate, has now scored all 66 of its covered cities from 0 to 100 for each calendar month of 2026, and across the twelve months, eight different cities get to hold the number-one spot. No city can keep the crown for more than three months, and the strongest single-month performer, Lisbon in July, shares almost nothing with the winter leader, Buenos Aires, which trumps the competition in January, October, and December handily.

The mechanism behind the score is what makes the calendar move. Classic climate tables measure rain in millimeters per month. But even here, usually millimeters lie. London's January and July both show near 70mm on a chart (and, to be fair, both are drizzly, at roughly 1.4 and 1.2 hours of noticeable rain daily). Singapore's January reports 348mm, five times London's total, but delivers its rain in tropical bursts: 4.4 hours a day, with 65% of mornings able to stay totally dry. A monthly total just can't give you the nuance required to tell the difference between those two climates. But hourly measurement can.

Hours, not millimeters

We went through and reviewed five years of hour-by-hour reanalysis data for every city and then counted only what we're calling "perceptible rain", that's at least 0.5 millimeters in an hour, because weather models over-report trace drizzle that no traveler would notice. From those hours we've derived two numbers that rainfall total isn't able to come up with: how many hours per day it rains, and what share of mornings, from 7am to noon local time, stay dry. Bangkok's September is the clearest case: 339mm over 28 rainy days sounds unsurvivable. But the hourly data shows 4.7 rain-hours per day and 72% of mornings are entirely dry, the famous pattern of afternoon monsoon downpours with calm starts, now measured and shared with you instead of passed along as an anecdote.

The climate signal makes up 60% of each month's score. The other 40% is split between the month's event calendar, a percent-rank of catalogued events of cities that we have feed coverage for, and astronomical daylight computed from each city's latitude (this is why northern European capitals climb in the summer rankings and fade in the winter ones). When a pillar has no data for a city, the remaining pillars are re-weighted instead of scoring the gap as a zero: a city without an events feed is unmeasured, not boring.

The 2026 calendar, measured and quantified for your traveling pleasure

A hemispheric relay

The table is a bit of a hemispheric relay. Buenos Aires and Costa Rica's San José own the northern winter, when their southern-summer and dry-season climates peak. Beijing takes the spring shoulder before its summer heat arrives. From May through September the crown stays in Europe, Lisbon, Bucharest, Budapest, Paris, London, where comfortable temperatures, long daylight, and packed event calendars stack all three pillars at once. Las Vegas wins November on mild desert weather and a relentless slate of events.

The floor of the table is as honest as the top. Singapore's July scores 13.6, the lowest month-score in the index, not because Singapore is a poor destination but because July multiplies hours of monsoon-adjacent rains, equatorial heat, and twelve-hour days against cities enjoying peak European summer. The score measures a month's fit, not a city's worth, and publishing the unflattering numbers is part of the point since a ranking that only says nice things is just advertising.

Every month is a frozen, citable edition at its own URL and we have made the full methodology, including every threshold and weight, public. The scores carry no commercial input: no city, hotel, or tour operator can pay to move a number. The complete month-by-month index can be found in TTDI's research hub, and the methodology page discloses the arithmetic.

Explore the full index at ttdi.net/research/best-cities-monthly or read the methodology in full.

Last verified: July 16, 2026.