Nagasaki — Water Temperature in February
Water Temperature Range
13°C
minimum
15°C
average
17°C
maximum
Water Temperature Chart for Month
The chart shows the average daily water temperature for each day of the month based on historical data.
Table of Water Temperatures by Day of the Month for Previous Years
| Day | 2026 | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| FEB 1 | -10°C | 15°C | 15°C | 16°C |
| FEB 2 | 14°C | 16°C | 14°C | 16°C |
| FEB 3 | 15°C | 16°C | 14°C | 16°C |
| FEB 4 | 15°C | 15°C | 14°C | 16°C |
| FEB 5 | 15°C | 16°C | 14°C | 16°C |
| FEB 6 | 14°C | 16°C | 14°C | 16°C |
| FEB 7 | 15°C | 16°C | 14°C | 16°C |
| FEB 8 | 15°C | 15°C | 14°C | 16°C |
| FEB 9 | 15°C | 15°C | 14°C | 15°C |
| FEB 10 | 14°C | 16°C | 14°C | 16°C |
| FEB 11 | 15°C | 16°C | 13°C | 16°C |
| FEB 12 | 15°C | 16°C | 14°C | 16°C |
| FEB 13 | 15°C | 15°C | 13°C | 16°C |
| FEB 14 | 15°C | 16°C | 13°C | 16°C |
| FEB 15 | 15°C | 15°C | 13°C | 17°C |
| FEB 16 | 14°C | 16°C | 13°C | 16°C |
| FEB 17 | 14°C | 15°C | 13°C | 16°C |
| FEB 18 | 14°C | 16°C | 13°C | 16°C |
| FEB 19 | 14°C | 16°C | 13°C | 16°C |
| FEB 20 | 15°C | 15°C | 13°C | 15°C |
| FEB 21 | 15°C | 15°C | 13°C | 16°C |
| FEB 22 | 15°C | 15°C | 13°C | 16°C |
| FEB 23 | 14°C | 16°C | 13°C | 16°C |
| FEB 24 | 15°C | 15°C | 13°C | 15°C |
| FEB 25 | 14°C | 15°C | 13°C | 16°C |
| FEB 26 | 14°C | 15°C | 13°C | 15°C |
| FEB 27 | 15°C | 15°C | 13°C | 15°C |
| FEB 28 | 15°C | 15°C | 13°C | 15°C |
| FEB 29 | -10°C | 15°C | 15°C | 15°C |
February: Climate and Swimming Opportunities
Average Night Air Temperature
4°C
Average Day Air Temperature
11°C
Precipitation Amount per Month
74 mm
Number of Rainy Days
11
Daylight per Day
11 hrs
Sunshine per Day
4 hrs
Average Wind Speed
13 km/h
Average Humidity
68%
With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.