August weather forecast
Dover, NH

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Weather in August

August in Dover mimics July's conditions closely, with near-peak temperatures and the least cloudiness, marked by 29% of cloud coverage. However, the slight drop in average high temperatures to 75.7°F (24.3°C) differentiates it from July's pinnacle heat. Transitioning from August to September, one can anticipate a dip in temperatures pointing towards the onset of fall. Despite the high temperatures, August retains all the summer charm offering spectacular sunsets and balmy evenings ideal for late-summer barbecues and outdoor concerts.

Temperature

The commencement of August brings an average high-temperature of a still moderately hot 75.7°F (24.3°C), marking an inconsequential divergence from July. Throughout August, Dover anticipates an average low-temperature of 61.3°F (16.3°C).

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Dover, New Hampshire, in August, it is raining for 13.1 days, with typically 2.01" (51mm) of accumulated precipitation. In Dover, during the entire year, the rain falls for 130.8 days and collects up to 22.24" (565mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Dover, the average length of the day in August is 13h and 54min.
On the first day of August, sunrise is at 5:34 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:19 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.7h of sunshine.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index in Dover. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures in Dover?

August temperatures in Dover, New Hampshire, vary between a high-temperature of 75.7°F (24.3°C) and a low-temperature of 61.3°F (16.3°C).

What is the average humidity in August in Dover?

In August, the average relative humidity is 79%.

How many days does it rain in August in Dover?

In August, the rain falls for 13.1 days. Throughout August, 2.01" (51mm) of precipitation is accumulated.

When it does not snow in Dover?

In Dover, New Hampshire, snow does not fall in May through September.

How many hours of daylight does Dover have in August?

In August, the average day length in Dover is 13h and 54min.

When are sunrise and sunset in August in Dover?

In August, on the first day of the month, sunrise is at 5:34 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:19 pm EDT.

What month has the most sunshine in Dover?

August has the most sunshine of the year in Dover, New Hampshire, with an average of 10.7h of sunshine.

How long on average sun shines in August in Dover?

The average sunshine duration in August in Dover is 10.7h.

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

The months with the highest UV index in Dover, New Hampshire, are July and August, with an average maximum UV index of 6.

How high is the UV index in August in Dover?

In August, the average daily maximum UV index in Dover is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Dover, NH

Average temperature in August - Dover, NH
  • Average high temperature in August: 75.7°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in August
Dover, NH

Average pressure in August - Dover, NH
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Dover, NH

Average wind speed in August - Dover, NH
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in August
Dover, NH

Average humidity in August - Dover, NH
  • Average humidity in August: 79%

The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are April and November (75%).

Average rainfall in August
Dover, NH

Average rainfall in August - Dover, NH
  • Average rainfall in August: 2.01"

The wettest months (with the highest rainfall) are June and December (2.13").
The driest month (with the least rainfall) is September (1.26").

Average rainfall days in August
Dover, NH

Average rainfall days in August - Dover, NH
  • Average rainfall days in August: 13.1 days

The month with the highest number of rainy days is July (14.6 days).
The months with the least rainy days are January and February (6.3 days).

Average snowfall in August
Dover, NH

Average snowfall in August - Dover, NH
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Dover, NH

Average snowfall days in August - Dover, NH
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Dover, NH

Average daylight in August / Average sunshine in August - Dover, NH
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days in August
Dover, NH

Average sunshine days in August - Dover, NH
  • Average sunshine days in August: 15.8 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (14.3 days).

Average UV index in August
Dover, NH

Average UV index in August - Dover, NH
  • Average UV index in August: 6

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 August
Dover, NH

Average cloud cover in August - Dover, NH
  • Average cloud cover in August: 29

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in August
Dover, NH

Average visibility in August - Dover, NH
  • Average visibility in August: 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).

Dover, New Hampshire, USA

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