When to go · Guernsey

When to go to Saint Peter Port

Twelve months of averages for Saint Peter Port, and what they say about when to go.

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, Saint Peter Port has a mean high between 18°C and 32°C and under 150 mm of rain in August.

Cold months (a mean high under 10°C): February.
The warmest month is August (18°C) and the coolest February (9°C). The wettest is November (110 mm) and the driest April (47 mm); about 849 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

Saint Peter Port: highs, lows and rainHighLowRain

The model's grid cell here is mostly sea, so the daily high and low sit closer together than they do on land: afternoons ashore are usually warmer, and nights cooler.

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanCool
FebCold
MarCool
AprCool
MayCool
JunCool
JulCool
AugMild–warm, mixed
SeptCool
OctCool
NovCool
DecCool

Month by month

Every month in Saint Peter Port

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in Saint Peter Port by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	10°C	8°C	96 mm	83%	85%	0.9	23°C	Cool
February	9°C	8°C	79 mm	83%	82%	1.6	24°C	Cold
March	10°C	8°C	69 mm	84%	77%	2.9	27°C	Cool
April	11°C	9°C	47 mm	85%	68%	4.7	31°C	Cool
May	13°C	11°C	51 mm	87%	68%	5.7	35°C	Cool
June	15°C	14°C	47 mm	88%	66%	6	37°C	Cool
July	17°C	16°C	47 mm	88%	63%	5.9	39°C	Cool
August	18°C	16°C	54 mm	86%	67%	4.9	39°C	Mild to warm, humid or showery
September	17°C	16°C	47 mm	83%	67%	3.7	37°C	Cool
October	16°C	14°C	96 mm	82%	78%	2.1	34°C	Cool
November	13°C	12°C	110 mm	82%	85%	1.1	29°C	Cool
December	11°C	9°C	106 mm	82%	86%	0.7	25°C	Cool

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

When to go nearby

Plan it

Plan a trip to Saint Peter Port

Tell us when and who is travelling, and a person puts the flights, the stays and the rest into one quote.

Plan a trip to Saint Peter Port More about Saint Peter Port When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

10°C

8°C

96 mm

83%

85%

0.9

23°C

Cool

February

9°C

8°C

79 mm

83%

82%

1.6

24°C

Cold

March

10°C

8°C

69 mm

84%

77%

2.9

27°C

Cool

April

11°C

9°C

47 mm

85%

68%

4.7

31°C

Cool

May

13°C

11°C

51 mm

87%

68%

5.7

35°C

Cool

June

15°C

14°C

47 mm

88%

66%

37°C

Cool

July

17°C

16°C

47 mm

88%

63%

5.9

39°C

Cool

August

18°C

16°C

54 mm

86%

67%

4.9

39°C

Mild to warm, humid or showery

September

17°C

16°C

47 mm

83%

67%

3.7

37°C

Cool

October

16°C

14°C

96 mm

82%

78%

2.1

34°C

Cool

November

13°C

12°C

110 mm

82%

85%

1.1

29°C

Cool

December

11°C

9°C

106 mm

82%

86%

0.7

25°C

Cool