Climate and monthly weather forecast
Bath, ME

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The climate of Bath

Designated with the classification of 'Humid continental, no dry season, warm summer' or simply 'Dfb' according to the widely accepted Köppen climate classification, Bath, Maine, USA lies in an intriguing climatic zone. Stressing on the overall climate, Bath experiences significant seasonal variation in temperature, with monthly average high temperatures ranging from 29.7°F (-1.3°C) in January to 73.4°F (23°C) in August. Contrarily, the average low temperatures range from 18.9°F (-7.3°C) to 60.4°F (15.8°C) during the same period.

Despite its continental nature, average monthly relative humidity in Bath hovers around 78% to 83%. Moreover, rainfall is scattered relatively evenly throughout the year in Bath, although totals fluctuate somewhat, ranging from 1.65" (42mm) in September to 3.5" (89mm) in October and December. It is compelling to note that snowfall also contributes considerably to Bath’s precipitation totals in the chillier months, with January witnessing 4.53" (115mm) and December getting 3.39" (86mm).

The daylight hours in Bath oscillate between 9 and 15.4 hours, while average monthly sunshine hours teeter between a low of 4.6 hours in February and a generous high of 10.4 hours in August. Bath also experiences fluctuating wind speeds across the year, with the maximum average monthly wind speed being 11.1mph (17.9km/h) in January, while the lowest is 6.8mph (10.9km/h) in August.

The best time to visit Bath

Generally, June to August can be considered the most pleasant months to visit Bath. Specifically, August has the highest average temperature, 73.4°F (23°C), and one of the longest daylight periods, 13.9 hours. Additionally, it experiences the second-highest average sunshine hours, 10.4 hours, making it ideal for outdoor activities and sightseeing.

The worst time to visit Bath

Visitors might want to avoid scheduling their trips to Bath from December to February. These months are the coldest with the average high temperatures only between 29.7°F (-1.3°C) and 37.9°F (3.3°C). The city also sees a considerable amount of snowfall during these months, making outdoor activities challenging. The average daylight hours are also the shortest around this period, fluctuating between 9 and 10.5 hours.

Spring weather in Bath

Beginning from March, Spring arrives in Bath bringing along a noticeable increase in temperatures from an average low of 26.6°F (-3°C) to an average high of 58.6°F (14.8°C) by May. Despite the gradually warming temperatures, the season witnesses a relatively high rainfall with April experiencing the highest rainfall in the year, 3.03" (77mm).

Summer weather in Bath

Summers in Bath are typically mild and agreeable with temperatures averaging from a high of 66.2°F (19°C) in June up to 73.4°F (23°C) in August. This is the time when Bath witness the highest average sunshine hours, maximizing at 10.4 hours in August. Rainfall during this period is moderate, with July experiencing the least rainfall of the year, 1.93" (49mm).

Autumn weather in Bath

During the transition from Summer to Winter, Bath experiences a dip in temperatures, with an average high of 67.1°F (19.5°C) in September down to 45.5°F (7.5°C) by November. The season also sees a significant increase in rainfall with October receiving the highest rainfall of 3.5" (89mm).

Winter weather in Bath

Winters in Bath are quite frigid with temperatures hovering between an average high of 37.9°F (3.3°C) in December and average low of 18.9°F (-7.3°C) in January. The chilly conditions are further intensified by substantial snowfall, rendering it unsuitable for outdoor activities. Moreover, the city sees the shortest daylight hours, only 9 hours in December and January.

Weather in January

Bath, Maine, commences the year with quite chilly conditions. A significant fluctuation in temperatures characterize the month, with an observed high of 29.7°F (-1.3°C) and a low reaching 18.9°F (-7.3°C), making layered clothing a common necessity among residents. Weather in January »

Weather in February

Following January's wintry conditions, February shows minute improvements in temperatures. The snowfall begins to gradually decrease, making way for increased rainfall. The town transitions to accommodate this precipitation shift, showing no signs of early spring. Weather in February »

Weather in March

The first month of the spring, March, is an icy month in Bath, Maine, with an average temperature fluctuating between 37.9°F (3.3°C) and 26.6°F (-3°C). March's arrival coincides with a subtle temperature rise, moving from February's subzero cold 31.5°F (-0.3°C) to a cold 37.9°F (3.3°C). Weather in March »

Weather in April

April serves as a bridge between the dull winter and crispy spring in Bath, Maine. A considerable jump to an average high temperature of 48.9°F (9.4°C) marks the transition into warmer weather. With the arrival of spring, rainfall becomes the primary form of precipitation, replenishing the town's flora. Weather in April »

Weather in May

May in Bath, Maine, holds the full bloom of spring. Delightful warm weather dominates as temperatures continue to escalate. The reduced pressure levels and absence of snowfall affirm the complete transition into the warmer months. May's rainfall contributing richly to the growth and vibrancy of nature. Weather in May »

Weather in June

Summer officially arrives in Bath, Maine, with June's warm temperatures and extended sunshine hours. With the high temperature reaching up to 66.2°F (19°C), residents enjoy the mild conditions of early summer. The flourishing green landscapes and blue skies reflect June’s characteristic weather. Weather in June »

Weather in July

Being the warmest month of the year, July in Bath, Maine, showcases peak summer conditions. A distinct rise in temperature, peaking at 73.2°F (22.9°C), enables residents to fully engage in summer activities. Despite the infrequent rainfalls, high humidity levels persist, maintaining a moist atmosphere. Weather in July »

Weather in August

August in Bath, Maine, continues the summer streak with hot temperatures, similar to July. Lower wind speeds yet humid conditions seem to slow the pace of town, encouraging residents to seek cooler indoor retreats. The town bathes in abundant sunshine, highlighted by soaring UV indices. Weather in August »

Weather in September

September in Bath, Maine, commences the fall season with a gradual dip in temperatures. The decrease in humidity and cooler winds bring a crisp freshness to the air. The town begins to resemble an artist's palette with colorful leaves marking the start of the fall season. Weather in September »

Weather in October

In October, Bath, Maine, fully embraces the fall season. Striking hues of fall foliage beautifully contrast the cooling temperatures, with a high of 56.3°F (13.5°C). Light breezes carry falling leaves through the town, adding to its autumnal charm. Weather in October »

Weather in November

November marks the onset of wintry conditions in Bath, Maine. With the high temperature dropping to 45.5°F (7.5°C), it's a notably cooler month compared to October. The town braces itself for the winter chill, with vibrant fall scenery gradually succumbing to the snowy landscapes. Weather in November »

Weather in December

Concluding the year, December in Bath, Maine, greets residents with winter's full force. Subzero temperatures become the norm as snowfall increases, blanketing the town in white layers. Amid the cold, the high humidity level maintains a sense of moisture in the air. Weather in December »
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Frequently asked questions

What is the coldest month in Bath?

January, with its average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 18.9°F (-7.3°C), holds the record as the coldest month in Bath.

How much does it rain in Bath?

Throughout the year, in Bath, Maine, there are 147.2 rainfall days, and 31.34" (796mm) of precipitation is accumulated.

When does it snow in Bath?

Months with snowfall in Bath, Maine, are January through May, October through December.

When does it snow the most in Bath?

The month with the most snowfall in Bath is January, when snow falls for 10.1 days and typically aggregates up to 4.53" (115mm) of snow.

How much does it snow in Bath?

In Bath, Maine, during the entire year, snow falls for 40.2 days and aggregates up to 18.82" (478mm) of snow.

What is the month with the lowest UV index in Bath?

The months with the lowest UV index in Bath are January through March, November and December, with an average maximum UV index of 2.

What is the month with the least sunshine in Bath?

February and December, with an average of 4.6h of sunshine, are months with the least sunshine in Bath.

When is Daylight Saving Time (DST) in Bath?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the most humid month in Bath?

June is the most humid month in Bath, Maine, with an average relative humidity of 83%.

When it does not snow in Bath?

June through September are months without snowfall in Bath, Maine.

When are the longest days in Bath?

The month with the longest days is June, with an average of 15h and 24min of daylight.

What is the month with the highest UV index in Bath?

June through August, with an average maximum UV index of 5, are months with the highest UV index in Bath, Maine.

What time of the year is the hottest in Bath?

August is the warmest month in Bath, with the temperature often reaching an average high of 73.4°F (23°C) and an average low of 59.7°F (15.4°C).

What month has the most sunshine in Bath?

With an average of 10.4h of sunshine, August has the most sunshine of the year.

What is the driest month in Bath?

September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.65" (42mm) of precipitation.

What is the rainiest month in Bath?

The months with the most rainfall are October and December, with an average 3.5" (89mm) of precipitation.

What is the least humid month in Bath?

November is the least humid month, with an average relative humidity of 75%.

What is the month with the shortest days in Bath?

With an average of 9h and 0min of daylight, December has the shortest days of the year in Bath, Maine.

Average temperature
Bath, ME

Average temperature - Bath, ME

The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure
Bath, ME

Average pressure - Bath, ME

The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Bath, ME

Average wind speed - Bath, ME

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

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Average rainfall
Bath, ME

Average rainfall - Bath, ME

The wettest months (with the highest rainfall) are October and December (3.5").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days
Bath, ME

Average rainfall days - Bath, ME

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.2 days).

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Average snowfall
Bath, ME

Average snowfall - Bath, ME

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Bath, ME

Average snowfall days - Bath, ME

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Bath, ME

Average daylight / Average sunshine - Bath, ME

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days
Bath, ME

Average sunshine days - Bath, ME

The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is April (11.9 days).

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Average UV index
Bath, ME

Average UV index - Bath, ME

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Bath, ME

Average visibility - Bath, ME

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).

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Bath, Maine, USA

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