Boston in May
Find out everything about the water temperature in Boston in May. Average, minimum and maximum recorded temperatures as well as daily temperature in May for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in May
Minimum:
83.7 °F
Average:
85.3 °F
Maximum:
87.1 °F
Sea water temperature in Boston in May
In the city of Boston, the month of May is a great time for swimming. The minimum recorded temperature during this month was 83.7°F on May 6, 2022, with an average temperature being 85.3°F and a maximum temperature reaching 87.1°F on May 30, 2024.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| May 1 | 84.8°F | 84.8°F | 85.8°F |
| May 2 | 84.9°F | 84.9°F | 85.8°F |
| May 3 | 84.9°F | 84.6°F | 85.7°F |
| May 4 | 84.9°F | 85.0°F | 85.6°F |
| May 5 | 85.1°F | 85.4°F | 85.4°F |
| May 6 | 85.0°F | 85.2°F | 85.2°F |
| May 7 | 85.1°F | 85.0°F | 85.2°F |
| May 8 | 85.1°F | 84.8°F | 85.9°F |
| May 9 | 85.1°F | 85.2°F | 86.3°F |
| May 10 | 85.2°F | 85.9°F | 86.2°F |
| May 11 | 85.1°F | 85.9°F | 86.1°F |
| May 12 | 85.0°F | 85.8°F | 85.9°F |
| May 13 | 85.1°F | 85.9°F | 86.3°F |
| May 14 | 85.2°F | 86.0°F | 86.8°F |
| May 15 | 85.2°F | 85.8°F | 85.8°F |
| May 16 | 85.3°F | 86.3°F | 86.9°F |
| May 17 | 85.4°F | 85.8°F | 87.1°F |
| May 18 | 85.4°F | 86.6°F | 87.0°F |
| May 19 | 85.4°F | 86.5°F | 86.7°F |
| May 20 | 85.2°F | 86.2°F | 86.5°F |
| May 21 | 85.4°F | 86.4°F | 86.3°F |
| May 22 | 85.4°F | 86.3°F | 86.1°F |
| May 23 | 85.5°F | 86.9°F | 85.9°F |
| May 24 | 85.5°F | 86.6°F | 85.8°F |
| May 25 | 85.6°F | 86.6°F | 85.9°F |
| May 26 | 85.6°F | 85.8°F | 86.3°F |
| May 27 | 85.7°F | 85.8°F | 86.3°F |
| May 28 | 85.6°F | 86.4°F | 86.1°F |
| May 29 | 85.7°F | 86.1°F | 86.3°F |
| May 30 | 85.7°F | 87.1°F | 86.0°F |
| May 31 | 85.6°F | 86.7°F | 85.9°F |
In Boston, the water temperature is comfortable for swimming all year round.
The warmest water in Boston was recorded on October 19, 2024, reaching a 87.6°F. While the coldest temperature occurred on February 10, 2019, dipping to 79.9°F. The average readings by season are 82.8°F in Winter, 83.9°F in Spring, 85.5°F in Summer, and 85.1°F in Autumn.
The average temperature in May is slightly warmer than April's average of 83.9°F. And in June, the temperature is expected to rise further, potentially reaching an average of 85.8°F.
