All data are in degrees Fahrenheit

en

Boston in April

Find out everything about the water temperature in Boston in April. Average, minimum and maximum recorded temperatures as well as daily temperature in April for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in April
Minimum:

36.8 °F

Average:

43.8 °F

Maximum:

50.1 °F

Sea water temperature in Boston in April

In the city of Boston, the month of April is too cold for swimming. The minimum recorded temperature during this month was 36.8°F on April 1, 2015, with an average temperature being 43.8°F and a maximum temperature reaching 50.1°F on April 28, 2023.

Swing in the water of such temperature might lead to potential hypothermia within just a few minutes. Throughout the month of April, the sea temperature gradually gets warmer. Starting with an average temperature of 41.5°F at the beginning of the month, it steadily increases to around 46.0°F by the end.
Date 10 years average 2024 2023
Apr 1 40.7°F 42.2°F 42.4°F
Apr 2 40.9°F 41.8°F 42.3°F
Apr 3 41.3°F 42.2°F 43.9°F
Apr 4 41.2°F 41.8°F 44.8°F
Apr 5 41.4°F 41.6°F 43.4°F
Apr 6 41.2°F 41.5°F 43.0°F
Apr 7 41.5°F 41.4°F 42.8°F
Apr 8 41.7°F 40.3°F 43.1°F
Apr 9 42.3°F 41.3°F 45.0°F
Apr 10 42.3°F 42.4°F 43.3°F
Apr 11 42.4°F 42.9°F 44.7°F
Apr 12 42.4°F 42.6°F 45.1°F
Apr 13 43.0°F 45.8°F 44.5°F
Apr 14 44.0°F 45.2°F 46.1°F
Apr 15 44.2°F 44.9°F 46.2°F
Apr 16 44.6°F 45.1°F 47.7°F
Apr 17 44.9°F 46.4°F 47.2°F
Apr 18 45.1°F 47.2°F 47.0°F
Apr 19 45.2°F 47.0°F 49.0°F
Apr 20 45.3°F 46.8°F 48.3°F
Apr 21 45.6°F 47.4°F 48.8°F
Apr 22 45.7°F 46.7°F 49.0°F
Apr 23 45.9°F 47.0°F 48.6°F
Apr 24 45.8°F 46.6°F 48.0°F
Apr 25 45.7°F 46.7°F 47.3°F
Apr 26 45.8°F 46.2°F 47.1°F
Apr 27 46.2°F 46.3°F 49.5°F
Apr 28 46.4°F 45.8°F 50.1°F
Apr 29 46.5°F 45.9°F 49.4°F
Apr 30 46.6°F 47.7°F 49.2°F

Sea water temperature in Boston by month

In an average year, Boston offers no days when the water temperature is warm enough to swim comfortably. The warmest water in Boston was recorded on July 29, 2020, reaching a 75.0°F. While the coldest temperature occurred on February 22, 2021, dipping to 33.7°F. The average readings by season are 41.3°F in Winter, 44.9°F in Spring, 64.8°F in Summer, and 58.0°F in Autumn. The average temperature in April is slightly warmer than March's average of 39.1°F. And in May, the temperature is expected to rise further, potentially reaching an average of 51.8°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
South Boston 49.4°F 2mi
Salem 50.0°F 14mi
Plymouth 50.8°F 34mi
Providence 51.2°F 41mi
Bristol 51.5°F 48mi

* current water temperature in this city

** straight line distance from Boston