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Best time to visit Mystic, CT, USA

Our verdict

The best time to visit Mystic is March-May

When’s the best time to visit Mystic, you ask? Based on several factors like the weather and climate, cost of flights and hotels, peak travel seasons and much more, the best time to go to Mystic is March-May.

In the summer months, temperatures tend to get to a maximum of around 26℃ (80℉). The weather at night in the winter, which is around January-time, can get down to a minimum of -6℃ (22℉).

The longest days between sunrise and sunset in Mystic are usually in July, so if you want to get the most out of your daytime activities, be sure to plan your visit around this time. On average it rains the most days in December, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.

Learn more about when to travel to Mystic, the monthly weather breakdown, FAQs and much more below. Once you’ve decided when you want to go, use our handy tools to find the best prices to suit your budget on flights, transport/transfers, places to stay, and loads more!

Warmest month

July

Least rainfall

September

Most daylight

July

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Where to?
Mystic

Mystic seasons

Before you continue, it’s important to know when the seasons are in Mystic as they might be different to yours depending on where in the world you’re travelling from. Mystic is in the Northern Hemisphere, so the seasons fall during these months:

Season Months
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Mystic

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Mystic for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Mystic climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Mystic for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Mystic in January

  • Average temperature: -0℃ (32℉)
  • Average high temperature: 3℃ (36℉)
  • Average low temperature: -3℃ (27℉)
  • Average humidity: 74%
  • Average sunny days: 15 days
  • Average rainfall: 68mm (3") over 11 days
  • Average snow days: 7 days
15 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Mystic in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Mystic in February

  • Average temperature: 1℃ (33℉)
  • Average high temperature: 3℃ (38℉)
  • Average low temperature: -3℃ (27℉)
  • Average humidity: 76%
  • Average sunny days: 13 days
  • Average rainfall: 67mm (3") over 10 days
  • Average snow days: 6 days
13 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Mystic in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Mystic in March

  • Average temperature: 4℃ (39℉)
  • Average high temperature: 6℃ (44℉)
  • Average low temperature: 1℃ (33℉)
  • Average humidity: 74%
  • Average sunny days: 12 days
  • Average rainfall: 75mm (3") over 13 days
  • Average snow days: 5 days
12 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Mystic in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Mystic in April

  • Average temperature: 9℃ (48℉)
  • Average high temperature: 12℃ (53℉)
  • Average low temperature: 6℃ (42℉)
  • Average humidity: 74%
  • Average sunny days: 12 days
  • Average rainfall: 82mm (3") over 16 days
  • Average snow days: 1 days
12 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Mystic in April, make sure you pack a warm jacket or coat.


Mystic in May

  • Average temperature: 14℃ (57℉)
  • Average high temperature: 17℃ (63℉)
  • Average low temperature: 11℃ (51℉)
  • Average humidity: 79%
  • Average sunny days: 12 days
  • Average rainfall: 66mm (3") over 17 days
12 days
of pure sunshine
17 days
of showers or rain

What to pack: If you’re heading to Mystic in May, make sure you pack a warm jacket or coat.


Mystic in June

  • Average temperature: 18℃ (65℉)
  • Average high temperature: 21℃ (71℉)
  • Average low temperature: 15℃ (59℉)
  • Average humidity: 81%
  • Average sunny days: 12 days
  • Average rainfall: 65mm (3") over 16 days
12 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Mystic in June, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.


Mystic in July

  • Average temperature: 23℃ (72℉)
  • Average high temperature: 26℃ (78℉)
  • Average low temperature: 19℃ (67℉)
  • Average humidity: 80%
  • Average sunny days: 12 days
  • Average rainfall: 66mm (3") over 16 days
12 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Mystic in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Mystic in August

  • Average temperature: 22℃ (72℉)
  • Average high temperature: 25℃ (78℉)
  • Average low temperature: 19℃ (66℉)
  • Average humidity: 78%
  • Average sunny days: 13 days
  • Average rainfall: 60mm (2") over 15 days
13 days
of pure sunshine
15 days
of showers or rain

What to pack: If you’re heading to Mystic in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Mystic in September

  • Average temperature: 19℃ (66℉)
  • Average high temperature: 22℃ (72℉)
  • Average low temperature: 16℃ (60℉)
  • Average humidity: 78%
  • Average sunny days: 15 days
  • Average rainfall: 44mm (2") over 13 days
15 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Mystic in September, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.

Mystic in October

  • Average temperature: 14℃ (57℉)
  • Average high temperature: 17℃ (62℉)
  • Average low temperature: 11℃ (52℉)
  • Average humidity: 76%
  • Average sunny days: 15 days
  • Average rainfall: 87mm (3") over 14 days
15 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Mystic in October, make sure you pack a warm jacket or coat.


Mystic in November

  • Average temperature: 8℃ (46℉)
  • Average high temperature: 11℃ (51℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 74%
  • Average sunny days: 17 days
  • Average rainfall: 72mm (3") over 11 days
  • Average snow days: 1 days
17 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Mystic in November, make sure you pack a warm jacket or coat.


Mystic in December

  • Average temperature: 3℃ (38℉)
  • Average high temperature: 6℃ (42℉)
  • Average low temperature: 1℃ (33℉)
  • Average humidity: 75%
  • Average sunny days: 14 days
  • Average rainfall: 98mm (4") over 13 days
  • Average snow days: 5 days
14 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Mystic in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Top FAQs

The hottest month of the year in Mystic is usually July, where temperatures tend to rise to around 26℃ (78℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Mystic is generally around September. The dry season often coincides with cooler weather, so you should check the temperatures in September first to make sure it’s still a good time to go.
The rainiest time of year in Mystic is generally around December, although the wetter season can sometimes extend a few months either side of December too.
If you want to get the most out of your time visiting Mystic, or if you're just afraid of the dark, the days in July are usually the longest between sunrise and sunset.

Mystic map

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