Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
As October arrives, Hyannis's weather displays a minor decrease in high-temperatures, transitioning from September's enjoyable 67.3°F (19.6°C) to a mild 59.9°F (15.5°C). A mean low-temperature of 54.5°F (12.5°C) is a distinguishing feature of October, indicating a slight dip from daytime highs.Humidity
In October, the average relative humidity in Hyannis, Massachusetts, is 76%.Rainfall
October is the month with the most rainfall. Rain falls for 14.5 days and accumulates 3.7" (94mm) of precipitation.Snowfall
In Hyannis, snow does not fall in May through November.Ocean temperature
In October, the average ocean temperature is 58.6°F (14.8°C).Note: It is advised against swimming in 58.6°F (14.8°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
In October, the average length of the day in Hyannis is 11h and 4min.On the first day of the month, sunrise is at 6:38 am and sunset at 6:22 pm. On the last day of October, in Hyannis, Massachusetts, sunrise is at 7:12 am and sunset at 5:36 pm EDT.
Sunshine
The average sunshine in October in Hyannis is 6.6h.UV index
In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during October leads to these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Hyannis in October?
What is the average humidity in October in Hyannis?
What is the wettest month in Hyannis?
How many days does it rain in October in Hyannis?
When it does not snow in Hyannis?
What is the ocean temperature in October in Hyannis?
What is the average length of the day in October in Hyannis?
When are sunrise and sunset in October in Hyannis?
How many hours of sunshine does Hyannis have in October?
How high is the UV index in October in Hyannis?
Average temperature in October
Hyannis, MA
- Average high temperature in October: 59.9°F
The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in October: 54.5°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in October
Hyannis, MA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
Hyannis, MA
- Average wind speed in October: 14.5mph
The windiest month (with the highest average wind speed) is January (16.5mph).
The calmest month (with the lowest average wind speed) is August (10.6mph).
Average humidity in October
Hyannis, MA
- Average humidity in October: 76%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is November (74%).
Average rainfall in October
Hyannis, MA
- Average rainfall in October: 3.7"
The wettest month (with the highest rainfall) is October (3.7").
The driest month (with the least rainfall) is August (1.73").
Average rainfall days in October
Hyannis, MA
- Average rainfall days in October: 14.5 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in October
Hyannis, MA
- Average snowfall in October: 0"
The month with the highest snowfall is March (1.93").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in October
Hyannis, MA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in October
Hyannis, MA
- Average sea temperature in October: 58.7°F
The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight in October /
Average sunshine in October
Hyannis, MA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 6h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in October
Hyannis, MA
- Average sunshine days in October: 14.6 days
The month with the most sunshine days is August (17.7 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in October
Hyannis, MA
- Average UV index in October: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in October
Hyannis, MA
- Average cloud cover in October: 40
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
Hyannis, MA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hyannis, Massachusetts, USA
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