LN world indexLNWI
SG77.47GI74.38EE74.37TW73.88CZ73.75GE73.44JE73.38IE73.24IM73.23MY73.21PT73.04NZ73.02AD72.89LT72.88BG72.85FI72.74HK72.60PL72.48HU72.48GB72.40AE72.40GG72.30RO72.28CY71.93CR71.89UY71.87SE71.81LU71.70LV71.58GG71.51HR71.28ES71.25AU71.11MU71.09CL70.97LI70.88NL70.82MT70.80FR70.80MC70.71CA70.70SJ70.70DE70.66DK70.62PA70.51SM70.43BM70.42AT70.40SK70.38MK70.35SI70.33CH70.25KY70.23QA70.13BH70.02MO69.89IT69.88GG69.87ME69.84VG69.83IS69.81GR69.65BE69.54SA69.31BN69.21RS69.20JP69.00AM68.82AL68.79NO68.74US68.56JO68.51SH68.49BL68.29TC68.23GD68.15KR68.07TH68.02AG67.96PR67.93KN67.92OM67.88BB67.85MD67.69PY67.45BQ67.34BA67.13PE67.09BS66.98AI66.86KW66.72FO66.71BQ66.70XK66.69MA66.42CW66.27BR66.21DO66.19MX66.14AR66.11BQ66.05KZ65.86SV65.86AW65.66CV65.64UZ65.40SC65.29MS64.98BW64.82FJ64.80NA64.74ID64.72IL64.39PF64.38GT64.37JM64.26VC64.00MN63.84KG63.79AZ63.71BZ63.67PM63.65FK63.61CK63.59PH63.58DM63.54TT63.39TR63.33VN63.30MF63.30GL63.22NU63.13UA63.12PN63.10CO63.01EC62.94LC62.79ZA62.67VU62.55PW62.53HN62.30WF62.28VI62.27BO62.21MH62.03IN61.94EG61.67GH61.58RW61.46SX61.40NC61.33KH61.23LK60.95CN60.95ZM60.80WS60.73NI60.72NP60.51KE60.29SN60.24MV60.16FM60.14TN60.02GY59.97MW59.93TZ59.78TL59.74BT59.43TO59.36GA59.33TJ59.18TK59.14SZ58.89ST58.75LA58.27CI57.71BJ57.68MG57.66SR57.60DZ57.21GM57.12LB56.87LS56.83NR56.69UG56.65TG56.12BF55.83TV55.81ZW55.68BD55.66RU55.57BY55.03PS54.83KI54.81DJ54.63MZ54.32IQ54.24KM53.57LR53.48AO53.43PK53.20TM53.20NG53.13LY52.71MR52.57SB52.53CM52.40GW52.23ET51.89NE51.82SL51.81CG51.66IR50.64GQ50.13PG49.97CU49.91GN49.84VE49.21ML49.14HT48.98MM48.72BI48.31CD48.24SD46.12SO45.59YE44.91AF44.90SY44.86TD44.06CF43.82ER41.78SS41.50
SG77.47GI74.38EE74.37TW73.88CZ73.75GE73.44JE73.38IE73.24IM73.23MY73.21PT73.04NZ73.02AD72.89LT72.88BG72.85FI72.74HK72.60PL72.48HU72.48GB72.40AE72.40GG72.30RO72.28CY71.93CR71.89UY71.87SE71.81LU71.70LV71.58GG71.51HR71.28ES71.25AU71.11MU71.09CL70.97LI70.88NL70.82MT70.80FR70.80MC70.71CA70.70SJ70.70DE70.66DK70.62PA70.51SM70.43BM70.42AT70.40SK70.38MK70.35SI70.33CH70.25KY70.23QA70.13BH70.02MO69.89IT69.88GG69.87ME69.84VG69.83IS69.81GR69.65BE69.54SA69.31BN69.21RS69.20JP69.00AM68.82AL68.79NO68.74US68.56JO68.51SH68.49BL68.29TC68.23GD68.15KR68.07TH68.02AG67.96PR67.93KN67.92OM67.88BB67.85MD67.69PY67.45BQ67.34BA67.13PE67.09BS66.98AI66.86KW66.72FO66.71BQ66.70XK66.69MA66.42CW66.27BR66.21DO66.19MX66.14AR66.11BQ66.05KZ65.86SV65.86AW65.66CV65.64UZ65.40SC65.29MS64.98BW64.82FJ64.80NA64.74ID64.72IL64.39PF64.38GT64.37JM64.26VC64.00MN63.84KG63.79AZ63.71BZ63.67PM63.65FK63.61CK63.59PH63.58DM63.54TT63.39TR63.33VN63.30MF63.30GL63.22NU63.13UA63.12PN63.10CO63.01EC62.94LC62.79ZA62.67VU62.55PW62.53HN62.30WF62.28VI62.27BO62.21MH62.03IN61.94EG61.67GH61.58RW61.46SX61.40NC61.33KH61.23LK60.95CN60.95ZM60.80WS60.73NI60.72NP60.51KE60.29SN60.24MV60.16FM60.14TN60.02GY59.97MW59.93TZ59.78TL59.74BT59.43TO59.36GA59.33TJ59.18TK59.14SZ58.89ST58.75LA58.27CI57.71BJ57.68MG57.66SR57.60DZ57.21GM57.12LB56.87LS56.83NR56.69UG56.65TG56.12BF55.83TV55.81ZW55.68BD55.66RU55.57BY55.03PS54.83KI54.81DJ54.63MZ54.32IQ54.24KM53.57LR53.48AO53.43PK53.20TM53.20NG53.13LY52.71MR52.57SB52.53CM52.40GW52.23ET51.89NE51.82SL51.81CG51.66IR50.64GQ50.13PG49.97CU49.91GN49.84VE49.21ML49.14HT48.98MM48.72BI48.31CD48.24SD46.12SO45.59YE44.91AF44.90SY44.86TD44.06CF43.82ER41.78SS41.50
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  1. Country profiles
  2. /
  3. Jersey
  4. /
  5. Cities
  6. /
  7. Saint Helier

CityCompass

Saint Helier, Jersey

  • Capital of Jersey
  • 28k people
  • St Helier

Best time to be here: June to August. Every month below carries its climate normals and a comfort score you can tune to your own tolerances.

Comfortable months
6 of 12
Comfort 7 or above
Comfort peak
8.8
In July
Year range
5 to 20 °C
Coldest nights to warmest days
Sunshine a year
1,924 h
Some sunshine
Saint HelierSaint Helier

Climate and comfort, month by month

Your comfort zone
0 °C5 °C10 °C15 °C20 °C25 °CJFMAMJJASOND
ComfortableMixedHarshAverage temperature, day-to-night range shaded
Jan4.39 °C
Feb4.99 °C
Mar5.910 °C
Apr7.412 °C
May8.015 °C
Jun8.518 °C
Jul8.819 °C
Aug8.520 °C
Sep8.019 °C
Oct6.316 °C
Nov5.012 °C
Dec4.310 °C
January9 °C / 6 °C4.3

Days 9 °C, nights 6 °C

44 h sunshine · 8.4 h daylight

80 mm rain · 87% humidity

  • Cold month, average 7.4 C
  • Grey, about 44 hours of sunshine
February9 °C / 5 °C4.9

Days 9 °C, nights 5 °C

80 h sunshine · 9.9 h daylight

66 mm rain · 85% humidity

  • Cold month, average 7 C
March10 °C / 6 °C5.9

Days 10 °C, nights 6 °C

151 h sunshine · 11.5 h daylight

59 mm rain · 85% humidity

  • Cool average of 8.2 C
April12 °C / 8 °C7.4

Days 12 °C, nights 8 °C

226 h sunshine · 13.5 h daylight

44 mm rain · 82% humidity

  • Cool average of 10.3 C
May15 °C / 11 °C8.0

Days 15 °C, nights 11 °C

262 h sunshine · 15.1 h daylight

53 mm rain · 83% humidity

  • Cool average of 12.8 C
  • Sunny, about 262 hours of sunshine
June18 °C / 14 °C8.5

Days 18 °C, nights 14 °C

260 h sunshine · 16.0 h daylight

47 mm rain · 83% humidity

  • Cool average of 15.6 C
  • Sunny, about 260 hours of sunshine
July19 °C / 16 °C8.8

Days 19 °C, nights 16 °C

266 h sunshine · 15.6 h daylight

51 mm rain · 82% humidity

  • Cool average of 17.4 C
  • Sunny, about 266 hours of sunshine
August20 °C / 16 °C8.5

Days 20 °C, nights 16 °C

228 h sunshine · 14.2 h daylight

54 mm rain · 82% humidity

  • Cool average of 17.9 C
September19 °C / 15 °C8.0

Days 19 °C, nights 15 °C

195 h sunshine · 12.4 h daylight

47 mm rain · 81% humidity

  • Cool average of 16.6 C
October16 °C / 13 °C6.3

Days 16 °C, nights 13 °C

118 h sunshine · 10.5 h daylight

83 mm rain · 83% humidity

  • Cool average of 14.2 C
November12 °C / 10 °C5.0

Days 12 °C, nights 10 °C

61 h sunshine · 8.9 h daylight

95 mm rain · 85% humidity

  • Cool average of 11 C
  • Grey, about 61 hours of sunshine
December10 °C / 7 °C4.3

Days 10 °C, nights 7 °C

32 h sunshine · 8.0 h daylight

95 mm rain · 86% humidity

  • Cool average of 8.3 C
  • Grey, about 32 hours of sunshine

The country behind the city

Living in Saint Helier means living under Jersey's tax and legal system. The essentials, from our country research:

Personal tax basisWorldwideResident income taxed wherever it arises
Cost floor, single$3,150/mo
LanguagesEnglish
Safety9.14 / 10
Healthcare8.44 / 10
Internet8.56 / 10
Banking ease9.53 / 10
ClimateShield 20507.61 / 10

Would Jersey actually work for your taxes?

It runs regimes like Independent Taxation Transition 2022 to 2026 (Universal from 1 January 2026), and whether they fit depends on your income, assets and citizenship, not on averages.

Run your GeoCompass analysisRead the full Jersey profile
How the comfort score works (v1)

Each month scores 0 to 10 from four weighted components: temperature (35%), sunshine (25%), humidity (20%) and rain (20%), with an extra penalty when heat and humidity combine. Personal tolerances reshape the score: your heat limit compares to how afternoons feel (heat index), your cold limit to typical nights. Data: NASA POWER climatology 2001-2020 with elevation corrections, daylight computed from latitude.

City data: GeoNames (CC BY 4.0) · Climate normals: NASA POWER (2001-2020) · Live weather: MET Norway (CC BY 4.0)

  1. Country profiles
  2. /
  3. Jersey
  4. /
  5. Cities
  6. /
  7. Saint Helier

CityCompass

Saint Helier, Jersey

  • Capital of Jersey
  • 28k people
  • St Helier

Best time to be here: June to August. Every month below carries its climate normals and a comfort score you can tune to your own tolerances.

Comfortable months
6 of 12
Comfort 7 or above
Comfort peak
8.8
In July
Year range
5 to 20 °C
Coldest nights to warmest days
Sunshine a year
1,924 h
Some sunshine
Saint HelierSaint Helier

Climate and comfort, month by month

Your comfort zone
0 °C5 °C10 °C15 °C20 °C25 °CJFMAMJJASOND
ComfortableMixedHarshAverage temperature, day-to-night range shaded
Jan4.39 °C
Feb4.99 °C
Mar5.910 °C
Apr7.412 °C
May8.015 °C
Jun8.518 °C
Jul8.819 °C
Aug8.520 °C
Sep8.019 °C
Oct6.316 °C
Nov5.012 °C
Dec4.310 °C
January9 °C / 6 °C4.3

Days 9 °C, nights 6 °C

44 h sunshine · 8.4 h daylight

80 mm rain · 87% humidity

  • Cold month, average 7.4 C
  • Grey, about 44 hours of sunshine
February9 °C / 5 °C4.9

Days 9 °C, nights 5 °C

80 h sunshine · 9.9 h daylight

66 mm rain · 85% humidity

  • Cold month, average 7 C
March10 °C / 6 °C5.9

Days 10 °C, nights 6 °C

151 h sunshine · 11.5 h daylight

59 mm rain · 85% humidity

  • Cool average of 8.2 C
April12 °C / 8 °C7.4

Days 12 °C, nights 8 °C

226 h sunshine · 13.5 h daylight

44 mm rain · 82% humidity

  • Cool average of 10.3 C
May15 °C / 11 °C8.0

Days 15 °C, nights 11 °C

262 h sunshine · 15.1 h daylight

53 mm rain · 83% humidity

  • Cool average of 12.8 C
  • Sunny, about 262 hours of sunshine
June18 °C / 14 °C8.5

Days 18 °C, nights 14 °C

260 h sunshine · 16.0 h daylight

47 mm rain · 83% humidity

  • Cool average of 15.6 C
  • Sunny, about 260 hours of sunshine
July19 °C / 16 °C8.8

Days 19 °C, nights 16 °C

266 h sunshine · 15.6 h daylight

51 mm rain · 82% humidity

  • Cool average of 17.4 C
  • Sunny, about 266 hours of sunshine
August20 °C / 16 °C8.5

Days 20 °C, nights 16 °C

228 h sunshine · 14.2 h daylight

54 mm rain · 82% humidity

  • Cool average of 17.9 C
September19 °C / 15 °C8.0

Days 19 °C, nights 15 °C

195 h sunshine · 12.4 h daylight

47 mm rain · 81% humidity

  • Cool average of 16.6 C
October16 °C / 13 °C6.3

Days 16 °C, nights 13 °C

118 h sunshine · 10.5 h daylight

83 mm rain · 83% humidity

  • Cool average of 14.2 C
November12 °C / 10 °C5.0

Days 12 °C, nights 10 °C

61 h sunshine · 8.9 h daylight

95 mm rain · 85% humidity

  • Cool average of 11 C
  • Grey, about 61 hours of sunshine
December10 °C / 7 °C4.3

Days 10 °C, nights 7 °C

32 h sunshine · 8.0 h daylight

95 mm rain · 86% humidity

  • Cool average of 8.3 C
  • Grey, about 32 hours of sunshine

The country behind the city

Living in Saint Helier means living under Jersey's tax and legal system. The essentials, from our country research:

Personal tax basisWorldwideResident income taxed wherever it arises
Cost floor, single$3,150/mo
LanguagesEnglish
Safety9.14 / 10
Healthcare8.44 / 10
Internet8.56 / 10
Banking ease9.53 / 10
ClimateShield 20507.61 / 10

Would Jersey actually work for your taxes?

It runs regimes like Independent Taxation Transition 2022 to 2026 (Universal from 1 January 2026), and whether they fit depends on your income, assets and citizenship, not on averages.

Run your GeoCompass analysisRead the full Jersey profile
How the comfort score works (v1)

Each month scores 0 to 10 from four weighted components: temperature (35%), sunshine (25%), humidity (20%) and rain (20%), with an extra penalty when heat and humidity combine. Personal tolerances reshape the score: your heat limit compares to how afternoons feel (heat index), your cold limit to typical nights. Data: NASA POWER climatology 2001-2020 with elevation corrections, daylight computed from latitude.

City data: GeoNames (CC BY 4.0) · Climate normals: NASA POWER (2001-2020) · Live weather: MET Norway (CC BY 4.0)