Quick answer: Siem Reap sits at 13.4° N and gets about 12 h 7 min of daylight today, with the sun 77° up at solar noon. The panel above scores each upcoming day 0–100 and returns a direct go, wait or skip verdict.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone.
Editorial seasonal guidance for Siem Reap where it has been written, plus daylight, midday sun angle and golden-hour length calculated for every month from Siem Reap's coordinates. This page does not publish monthly temperature or rainfall averages: the site has no verified climate dataset, and it no longer generates one. For decisions inside the next week, the live 7-day ranking on the Siem Reap weather page is the right tool.
Any weather decision in Siem Reap starts from the light budget. In September the location gets about 12 h 7 min of daylight, with the sun peaking 77° above the horizon — that sets how warm afternoons run, how long outdoor plans stay viable and how much usable photographic light the day contains. The scores above layer the live Open-Meteo forecast on top of that baseline.
Daylight, midday sun angle and golden-hour length below are calculated for Siem Reap's own coordinates (13.37° N, 103.84° E) on the 15th of each month. These are solar geometry, not climate averages.
| Month | Daylight | Sun at solar noon | Golden hour |
|---|---|---|---|
| January | 11 h 24 min | 55° | 44 min |
| February | 11 h 42 min | 63° | 42 min |
| March | 12 h 0 min | 74° | 41 min |
| April | 12 h 24 min | 86° | 42 min |
| May | 12 h 42 min | 85° | 44 min |
| June | 12 h 54 min | 80° | 45 min |
| July | 12 h 48 min | 82° | 44 min |
| August | 12 h 36 min | 90° | 42 min |
| September | 12 h 12 min | 79° | 41 min |
| October | 11 h 48 min | 67° | 42 min |
| November | 11 h 30 min | 57° | 44 min |
| December | 11 h 18 min | 53° | 45 min |
Scores are capped by dealbreakers — heavy rain, dangerous wind, thick fog or hazardous UV pull a day down no matter how pleasant the rest of the numbers look. Forecast data is Open-Meteo; solar and lunar values are computed for Siem Reap's own coordinates and time zone. Full details on the methodology page.