Temperature
Warm by day, mild at night.
Warm days and some sun.

Warm by day, mild at night.
It rains on most days, including some longer spells. About 23 wet days, more than in most months.
Cloudier spells limit sunshine.
Warm days, with humid periods.
In May, afternoons feel about 82° and nights feel near 71°.
Mostly cloudy skies this month.
Calm winds are typical in May.
May late afternoons are around 76°F, easing to about 72°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 66 | 52 | 1.5 | 8 | 9.2 | 77 |
| Feb | 68 | 54 | 1.8 | 8 | 9.5 | 77 |
| Mar | 72 | 58 | 2.9 | 12 | 10.3 | 77 |
| Apr | 76 | 63 | 4.9 | 17 | 10.2 | 78 |
| May | 79 | 67 | 8.4 | 23 | 9.8 | 80 |
| Jun | 82 | 69 | 12.7 | 25 | 9.6 | 81 |
| Jul | 82 | 71 | 18.7 | 28 | 9.8 | 82 |
| Aug | 82 | 70 | 19.6 | 29 | 8.8 | 83 |
| Sep | 81 | 69 | 13.4 | 25 | 9.6 | 82 |
| Oct | 78 | 66 | 7.4 | 18 | 10.0 | 81 |
| Nov | 74 | 61 | 2.7 | 10 | 9.5 | 80 |
| Dec | 68 | 54 | 1.7 | 8 | 9.1 | 79 |
Similar climates
Want a side-by-side climate view? Compare Sun Moon Lake with Sapa.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology