Cool
Average highs are around 3°C, so pack for cooler days.
January verdict
Hyannis, Massachusetts, United States in January
Weather score24Poor
Poor for holiday weather
Average highs are around 3°C, so pack for cooler days. Sunshine averages 5h per day, enough for a balanced month. Rainfall averages 100mm, so some wet days are possible.
January weather
Monthly averages
Temp
3°C
Rain
100mm
Sun
5h
Sea
4°C
Weather score
24
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 100mm, so some wet days are possible.
Some sun
Sunshine averages 5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 4°C, so the water can feel cool.
Map
Weather map
Compare Hyannis, Massachusetts, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
January3°C average high
January has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
January100mm average rain
January is wetter than Hyannis' yearly average, so flexible plans matter more.
Driest monthsFebruary, May to July, and September to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
January5 hours average sun
January is below Hyannis' yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
January4°C average sea
January is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJuly to September
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
Weather score
January24 weather score
January is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
