Rui’an weather in May
May is a fair month to visit Rui’an: highs of 25°C (76°F) and about 175 mm (6.9 in) of rain on average. Nights average 17°C (63°F) and cloud cover 81% (NASA POWER, 2001–2025 averages). The sea averages 22°C (71°F). It is the 4th wettest month of the year and the 5th warmest. Compared with April, it is warmer and wetter; June brings highs of 28°C (82°F) and 251 mm (9.9 in) of rain.
Is May a good time to visit Rui’an?
fair month Weather score 55/100.
May is a fair month in Rui’an. The weather is usually best in Oct–Nov.
Does it rain a lot in Rui’an in May?
Yes, it is one of the rainy months: about 175 mm (6.9 in) falls in an average May. It is the 4th wettest month of the year.
How warm is Rui’an in May?
Days average 25°C (76°F) and nights 17°C (63°F).
Rui’an weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 11°C (53°F) | 3°C (37°F) | 64 mm | 77% | 11°C (52°F) | least pleasant |
| February | 13°C (56°F) | 4°C (40°F) | 77 mm | 78% | 11°C (52°F) | least pleasant |
| March | 16°C (62°F) | 7°C (45°F) | 129 mm | 77% | 13°C (55°F) | fair |
| April | 21°C (70°F) | 12°C (53°F) | 132 mm | 78% | 17°C (63°F) | fair |
| May | 25°C (76°F) | 17°C (63°F) | 175 mm | 81% | 22°C (71°F) | fair |
| June | 28°C (82°F) | 21°C (70°F) | 251 mm | 84% | 26°C (78°F) | least pleasant |
| July | 30°C (87°F) | 24°C (76°F) | 147 mm | 66% | 29°C (85°F) | fair |
| August | 30°C (86°F) | 24°C (75°F) | 233 mm | 63% | 31°C (89°F) | least pleasant |
| September | 28°C (82°F) | 21°C (69°F) | 180 mm | 69% | 31°C (88°F) | fair |
| October | 23°C (74°F) | 15°C (59°F) | 67 mm | 60% | 28°C (82°F) | best |
| November | 19°C (66°F) | 10°C (51°F) | 83 mm | 72% | 21°C (70°F) | best |
| December | 13°C (56°F) | 4°C (39°F) | 60 mm | 71% | 16°C (61°F) | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months