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Hemel Hempstead weather & best time to visit

City break

Hemel Hempstead at a glance

Best time
May – Sep
Warmest month
Jul · 22°
Sunshine a year
1,630 h
Rain a year
677 mm
Climate
Maritime
Time zone
UTC+0 / UTC+1
Elevation
138 m

Climate in Hemel Hempstead

Hemel Hempstead has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 22 °C, while January is the coolest at 7 °C. With around 1,630 hours of sunshine a year, Hemel Hempstead is moderately sunny; July is the sunniest month with 6.8 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Hemel Hempstead

The best time to visit Hemel Hempstead is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. The wettest month is October with 66 mm of precipitation.

Hemel Hempstead through the seasons

How the weather changes over the seasons, with averages for each.

Hemel Hempstead in spring

Mar – May

51

Fair

  • 10–17 °C by day
  • 5.4 h of sun a day
  • 33 rainy days in all

Hemel Hempstead in summer

Jun – Aug

77

Good

  • 20–22 °C by day
  • 6.6 h of sun a day
  • 33 rainy days in all

Hemel Hempstead in autumn

Sep – Nov

49

Fair

  • 10–19 °C by day
  • 3.7 h of sun a day
  • 33 rainy days in all

Hemel Hempstead in winter

Dec – Feb

15

Poor

  • 7–8 °C by day
  • 2.1 h of sun a day
  • 33 rainy days in all

Which month for what?

Beach & swimming

No sea nearby

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

May – Sep

15–28 °C and not too much rain

Rainy months

Oct

Rainy season or more than 12 rainy days

Find your perfect month

Tell us what you like and we rate every month in Hemel Hempstead for you.

Sunshine
Little rain

Your best months: July – August

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

47

Holiday weather in October

Fair

Best time to visit: May – September

Keep in mindFrequent rain

A typical day in October

  1. Morning, 08:00: about 8°
  2. Midday, 13:00: about 14°
  3. Afternoon, 16:00: about 14°
  4. Evening, 20:00: about 11°
  5. Night, 23:00: about 10°

07:2418:11

Cold evenings: bring a warm jacket.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour
Morning 07:03–08:10 · evening 17:25–18:31
Blue hour
Morning 06:50–07:03 · evening 18:31–18:45

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Hemel Hempstead compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs fall from about 16° at the start of the month to 12° at the end. The days get 1.9 h shorter.

Early or late October?
October1 Oct31 Oct
Daytime high16°12°
Night-time low9°6°
Daylight11.7 h9.8 h

What is the weather like in Hemel Hempstead in October?

In October, Hemel Hempstead is cool: daytime highs average 14 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.6 hours a day. Rain is frequent, with about 12 rainy days and 66 mm in total. All in all, October is a so-so month for a holiday in Hemel Hempstead.

More details for October

Daylight
10 h 47 min07:24 – 18:11
UV index
2 · lowclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
22 km/haverage daily peakAll months
Cloud cover
72 %on averageAll months
Hot days
0 days30 °C or more
Snow days
0 days1 cm or more of fresh snow
Time zone
UTC+1offset from UTC

How the score comes together

  • Temperatureweight 50 %64 %
  • Sunshineweight 20 %10 %
  • Few rainy daysweight 30 %42 %

Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.

What to pack in October

  • A jumper for the evenings
  • Rain jacket or umbrella

Compare two months in Hemel Hempstead

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

June has the better holiday weather in Hemel Hempstead: score 79 against 47. In June, days are 6 °C warmer than in October. June has 2 fewer rainy days. The sun shines 3 hours longer a day in June.

October vs June, Hemel Hempstead
MonthOctoberJune
Holiday weather score4779better
Daytime high14°20°
Night-time low8°10°
Sunshine3.6 h6.7 hbetter
Rainy days1210better
Rainfall66 mm59 mm

Based on the climate averages 1996–2025.

Hemel Hempstead month by month

The typical weather for every month at a glance.

15January7° · 1.9 h

In January, Hemel Hempstead is cold: daytime highs average 7 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 1.9 hours a day. Rain is frequent, with about 11 rainy days and 55 mm in total. All in all, January is not an ideal month for a holiday in Hemel Hempstead.

Hemel Hempstead in January
16February8° · 2.7 h

In February, Hemel Hempstead is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.7 hours a day. Rain is frequent, with about 11 rainy days and 48 mm in total. All in all, February is not an ideal month for a holiday in Hemel Hempstead.

Hemel Hempstead in February
31March10° · 3.9 h

In March, Hemel Hempstead is cool: daytime highs average 10 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 3.9 hours a day. Rain is frequent, with about 10 rainy days and 46 mm in total. All in all, March is not an ideal month for a holiday in Hemel Hempstead.

Hemel Hempstead in March
52April14° · 5.7 h

In April, Hemel Hempstead is cool: daytime highs average 14 °C, and nights cool down to about 5 °C. Expect around 5.7 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 48 mm in total. All in all, April is a so-so month for a holiday in Hemel Hempstead.

Hemel Hempstead in April
70May17° · 6.6 h

In May, Hemel Hempstead is mild: daytime highs average 17 °C, and nights cool down to about 7 °C. The sun shines for around 6.6 hours a day. Rain is frequent, with about 11 rainy days and 59 mm in total. All in all, May is a good month for a holiday in Hemel Hempstead.

Hemel Hempstead in May
79June20° · 6.7 h

In June, Hemel Hempstead is mild: daytime highs average 20 °C, and nights cool down to about 10 °C. The sun shines for around 6.7 hours a day. Rain is frequent, with about 10 rainy days and 59 mm in total. All in all, June is a good month for a holiday in Hemel Hempstead.

Hemel Hempstead in June
76July22° · 6.8 h

In July, Hemel Hempstead is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sun shines for around 6.8 hours a day. Rain is frequent, with about 12 rainy days and 60 mm in total. All in all, July is a good month for a holiday in Hemel Hempstead.

Hemel Hempstead in July
76August22° · 6.4 h

In August, Hemel Hempstead is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. Expect around 6.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 63 mm in total. All in all, August is a good month for a holiday in Hemel Hempstead.

Hemel Hempstead in August
76September19° · 5.1 h

In September, Hemel Hempstead is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. Expect around 5.1 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 50 mm in total. All in all, September is a good month for a holiday in Hemel Hempstead.

Hemel Hempstead in September
47October14° · 3.6 h

In October, Hemel Hempstead is cool: daytime highs average 14 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.6 hours a day. Rain is frequent, with about 12 rainy days and 66 mm in total. All in all, October is a so-so month for a holiday in Hemel Hempstead.

Hemel Hempstead in October
24November10° · 2.3 h

In November, Hemel Hempstead is cool: daytime highs average 10 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 2.3 hours a day. Rain is frequent, with about 12 rainy days and 65 mm in total. All in all, November is not an ideal month for a holiday in Hemel Hempstead.

Hemel Hempstead in November
14December8° · 1.8 h

In December, Hemel Hempstead is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 1.8 hours a day. Rain is frequent, with about 12 rainy days and 59 mm in total. All in all, December is not an ideal month for a holiday in Hemel Hempstead.

Hemel Hempstead in December

Climate in detail

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Hemel Hempstead

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

  • Cold 0–8°
  • Cool 8–15°

CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.

The coolest nights are in February (2°), the warmest in July (12°). Nights fall below 8 °C on average from November to May, so the room should be heated.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 14°Night 8°
DayNight
MonthScoreDayNightSunRain daysRain mm
JanuaryJan157°2°1.9 h1155
FebruaryFeb168°2°2.7 h1148
MarchMar3110°3°3.9 h1046
AprilApr5214°5°5.7 h1148
MayMay7017°7°6.6 h1159
JuneJun7920°10°6.7 h1059
JulyJul7622°12°6.8 h1260
AugustAug7622°12°6.4 h1163
SeptemberSep7619°10°5.1 h950
OctoberOct4714°8°3.6 h1266
NovemberNov2410°4°2.3 h1265
DecemberDec148°2°1.8 h1259

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

51.75° N, 0.45° W · 138 m · Europe/London

Sunshine

Sunshine hours in Hemel Hempstead

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
1,630 hours
Sunniest month
Jul · 6.8 h a day
Least sunshine
Dec · 1.8 h a day
OctoberSunshine 3.6 hDaylight 10.8 hShare of daylight 33 %
SunshineDaylight

In October, the sun shines for about 3.6 of 10.8 hours of daylight in Hemel Hempstead, 33 % of the daylight hours.

Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.

Rain

Rain in Hemel Hempstead: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

Per year
677 mm on 132 days
Wettest month
Oct · 66 mm
Driest month
Mar · 46 mm
OctoberRainy days 12Rainfall 66 mm

In October, Hemel Hempstead has about 12 rainy days with 66 mm of rain in total.

Sun protection

UV index in Hemel Hempstead

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
2 · lowLittle protection needed; sunglasses on bright days.

The sun is strongest in June (UV 7).

Minutes until sunburn in October

Very fair skin
about 70 min
Fair skin
about 90 min
Light brown skin
over 2 h
Olive skin
over 2 h

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & clouds

Wind and clouds in Hemel Hempstead

How breezy and how cloudy Hemel Hempstead is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

Year average
21 km/h · moderate breeze
Windiest month
Feb · 24 km/h
Calmest month
Jul · 18 km/h
OctoberWind 22 km/hBeaufort 4

In October, the wind in Hemel Hempstead typically peaks at 22 km/h during the day: Beaufort 4, moderate breeze.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
69 % · mostly cloudy
Clearest month
Jul · 65 %
Cloudiest month
Dec · 73 %
OctoberCloud cover 72 %Sunshine 3.6 h

In October, cloud covers on average 72 % of the sky over Hemel Hempstead: mostly cloudy, with about 3.6 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Planning a trip to Hemel Hempstead

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Hemel Hempstead in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Hemel Hempstead has its best school-holiday weather during the summer holidays (score 76) and its weakest during the Christmas holidays (score 15).

  • Easter holidays

    Mar – Apr

    46

    Fair

    • 13 °C by day
    • 5.2 h of sun a day
    • 11 rainy days a month
  • May half-term

    May – Jun

    72

    Good

    • 17 °C by day
    • 6.6 h of sun a day
    • 11 rainy days a month

    Good for: Sightseeing & walks

  • Summer holidays

    Jul – Aug

    76

    GoodBest holidays

    • 22 °C by day
    • 6.5 h of sun a day
    • 11 rainy days a month

    Good for: Sightseeing & walks

  • October half-term

    Oct

    47

    Fair

    • 14 °C by day
    • 3.6 h of sun a day
    • 12 rainy days a month

    Keep in mind: Frequent rain

  • Christmas holidays

    Dec – Jan

    15

    Poor

    • 7 °C by day
    • 1.9 h of sun a day
    • 11 rainy days a month

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
Short trip – train or car is often quicker
Distance
30 km
Time zone
UTC+1
Jet lag
Hardly any (under 3 h)

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Compare & alternatives

Compare

Hemel Hempstead compared

Put Hemel Hempstead side by side with another destination.

Nearby:
Compare with home:

Hemel Hempstead vs St Albans

In October the holiday weather in Hemel Hempstead and St Albans is about equally good (score 47 vs 50). During the day St Albans is 1 °C warmer than Hemel Hempstead.

Hemel Hempstead vs St Albans, in October
in OctoberHemel HempsteadSt Albans
Holiday weather score4750
Daytime high14°15°
Sunshine4 h4 h
Rainy days1212
Best timeMay – SepMay – Sep

Through the year

OctoberHemel Hempstead 14°St Albans 15°
Hemel HempsteadSt Albans
Go to St Albans
Ranking

United Kingdom in October: the best places

In October, Hemel Hempstead ranks 26 among the 31 nearest destinations in this country.

  1. Weybridge16°60
  2. 2London16°57
  3. 3Marlow15°56
  4. 4Slough16°55
  5. 5Henley-on-Thames15°55
  6. 6Watford16°54
  7. 7Woking16°54
  8. 8Guildford16°54
  9. 26Hemel HempsteadThis page14°47
All destinations: United Kingdom

Near Hemel Hempstead

Other destinations close by.

Places with a climate like Hemel Hempstead

Destinations whose weather through the year is closest to Hemel Hempstead's – good alternatives.

  1. 93 % similar48DoncasterUnited Kingdom15°Best time: May – Sep
  2. 93 % similar47RotherhamUnited Kingdom14°Best time: May – Sep
  3. 92 % similar48LincolnUnited Kingdom15°Best time: May – Sep
  4. 91 % similar47HerefordUnited Kingdom15°Best time: May – Sep

Frequently asked questions about Hemel Hempstead

When is the best time to visit Hemel Hempstead?

The best time to visit Hemel Hempstead is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

What is the warmest month in Hemel Hempstead?

July is the warmest month, with average highs of 22 °C and nights around 12 °C. January is the coolest month at 7 °C.

When does it rain most in Hemel Hempstead?

The wettest month is October with 66 mm of precipitation. The driest month is March with 46 mm.

How many hours of sunshine does Hemel Hempstead get?

Hemel Hempstead gets around 1,630 hours of sunshine a year. The sunniest month is July with 6.8 hours a day; in December there are 1.8 hours a day.

What time zone is Hemel Hempstead in?

Hemel Hempstead is on UTC+0 in January and UTC+1 in July.

Which school holidays are best for Hemel Hempstead?

Hemel Hempstead has its best school-holiday weather during the summer holidays (score 76) and its weakest during the Christmas holidays (score 15). Holiday ratings (0–100): Easter holidays 46, May half-term 72, summer holidays 76, October half-term 47, Christmas holidays 15.