Colombo from Seattle
13,560 km, about 17h 27m in the air. Every month scored for the weather at Colombo and for the holidays that crowd it out at both ends.
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Free, on Telegram. One tap — SEA is already chosen. We write
when a fare is genuinely below what that route normally costs, and
/stop ends it.
Public holidays at Seattle move this destination's year too little to make it a different answer, so the Colombo page is the one of record. This one is kept for the distance and the flight it implies.
No fare history on SEA–CMB yet, so this ranking is climate and crowds only. The price column fills in as the scanner collects.
Month by month from Seattle
| Month | Max °C | Rain days | Crowds | Verdict | Why |
|---|---|---|---|---|---|
| Jan | 30° | 8d | 45 | okbusy | peak: This period witnesses the highest influx of tourists due to… |
| Feb | 32° | 5d | 65 | sweet spot busy | peak: This period witnesses the highest influx of tourists due to… |
| Mar | 31° | 12d | 65 | okbusy | peak: This period witnesses the highest influx of tourists due to… |
| Apr | 31° | 20d | 85 | ok | 31C max, 20 rainy days |
| May | 30° | 26d | 85 | avoid | monsoon: 26 rainy days, 347mm |
| Jun | 29° | 27d | 100 | avoid | monsoon: 27 rainy days, 279mm |
| Jul | 29° | 21d | 100 | avoid | monsoon (moderate) |
| Aug | 29° | 23d | 100 | avoid | monsoon: 23 rainy days, 182mm |
| Sep | 29° | 25d | 100 | avoid | monsoon: 25 rainy days, 272mm |
| Oct | 29° | 26d | 65 | avoid | monsoon: 26 rainy days, 352mm |
| Nov | 29° | 23d | 65 | avoid | monsoon: 23 rainy days, 436mm |
| Dec | 30° | 15d | 45 | okbusy | peak: This period witnesses the highest influx of tourists due to… |
Crowds is a score out of 100 where higher is quieter. It counts public-holiday clusters in US as well as at Colombo, which is why this table differs from the same one read from another country. A busy month is a crowded one, not a bad one — usually it is crowded because the weather is good. Crowds alone never make a month “avoid”: that is reserved for weather worth skipping.
The year in Colombo
Colombo experiences a tropical climate, and the weather patterns indicated by the climate normals should guide your planning as it can be more humid and rainy during the monsoon period.
| Busiest |
mid Dec to late Mar — This period witnesses the highest influx of tourists due to favorable weather and holiday seasons.
|
|---|---|
| Quieter, still good |
early Apr to late May — The shoulder months before the wet season start to see fewer tourists and lower prices.
early Oct to late Nov — Post-peak season with more reasonable prices as the weather becomes more unpredictable.
|
| Wet or stormy |
early May to late Sep — monsoon, moderate
|
| Watch out for | haze |
This section was written by a language model from the climate figures above, and nobody has checked it. The month-by-month table is measured — ten years of ERA5 readings and published holiday calendars — and where the two disagree, the table is the one to believe. The busiest and quieter periods here also count toward the crowd score, which is 20% of the ranking.
The rest of the trip
Colombo from anywhere · everywhere from Seattle
Some links above are affiliate links: if you book through one, we may earn a commission at no extra cost to you. It does not affect the scores on this page, which are computed from climate, holiday and fare data before any link is built.