Niigata weather in May
May is one of the best months to visit Niigata: highs of 17°C (63°F) and about 85 mm (3.3 in) of rain on average. Nights average 13°C (56°F) and cloud cover 72% (NASA POWER, 2001–2025 averages). The sea averages 16°C (61°F). It is the driest month of the year and the 6th warmest. Compared with April, it is warmer and about as wet; June brings highs of 22°C (71°F) and 113 mm (4.4 in) of rain.
Figures are long-term averages for Niigata, the largest city in Niigata. See below for other places.
Is May a good time to visit Niigata?
best month Weather score 64/100.
Yes. May is one of the best months for weather in Niigata.
Does it rain a lot in Niigata in May?
Some rain is normal: about 85 mm (3.3 in) falls in an average May. It is the driest month of the year.
How warm is Niigata in May?
Days average 17°C (63°F) and nights 13°C (56°F).
Niigata weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 6°C (43°F) | 4°C (38°F) | 166 mm | 89% | 11°C (51°F) | least pleasant |
| February | 6°C (43°F) | 3°C (38°F) | 105 mm | 85% | 9°C (49°F) | least pleasant |
| March | 8°C (47°F) | 5°C (41°F) | 107 mm | 80% | 10°C (49°F) | fair |
| April | 12°C (54°F) | 9°C (47°F) | 95 mm | 74% | 12°C (54°F) | fair |
| May | 17°C (63°F) | 13°C (56°F) | 85 mm | 72% | 16°C (61°F) | best |
| June | 22°C (71°F) | 18°C (65°F) | 113 mm | 79% | 22°C (71°F) | best |
| July | 25°C (78°F) | 22°C (72°F) | 213 mm | 82% | 27°C (80°F) | fair |
| August | 28°C (82°F) | 25°C (76°F) | 145 mm | 72% | 29°C (85°F) | best |
| September | 25°C (76°F) | 22°C (71°F) | 141 mm | 75% | 28°C (82°F) | best |
| October | 19°C (67°F) | 17°C (62°F) | 151 mm | 75% | 23°C (73°F) | best |
| November | 14°C (58°F) | 11°C (52°F) | 168 mm | 78% | 18°C (64°F) | fair |
| December | 9°C (49°F) | 6°C (43°F) | 215 mm | 87% | 14°C (56°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across Niigata in May
Weather can differ a lot within Niigata: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Niigata | 17°C (63°F) | 13°C (56°F) | 85 mm | best |
| Nagaoka | 20°C (68°F) | 12°C (53°F) | 92 mm | best |
| Jōetsu | 19°C (66°F) | 10°C (50°F) | 92 mm | best |
| Shibata | 19°C (67°F) | 10°C (51°F) | 86 mm | best |
| Sanjō | 20°C (68°F) | 12°C (53°F) | 92 mm | best |
| Kashiwazaki | 20°C (68°F) | 12°C (53°F) | 92 mm | best |
| Tsubame | 20°C (68°F) | 12°C (53°F) | 92 mm | best |
| Niitsu-honchō | 19°C (67°F) | 10°C (51°F) | 86 mm | best |
| Murakami | 19°C (67°F) | 10°C (51°F) | 86 mm | best |
| Minamiuonuma | 19°C (66°F) | 7°C (45°F) | 92 mm | best |
| Tōkamachi | 19°C (66°F) | 7°C (45°F) | 92 mm | best |
| Sado | 17°C (62°F) | 13°C (56°F) | 86 mm | best |