How many sunny days does Saint Croix have per year?

Saint Croix averages approximately 332 sunny days per year, based on historical climate data.

What is the air quality in Saint Croix?

Saint Croix has an annual PM2.5 concentration of 6.3 µg/m³, classified as "Good" by WHO standards. Within WHO interim target 4. Low health risk for most people.

Saint Croix Island

Saint Croix · U.S. Virgin Islands

The largest city in U.S. Virgin Islands.

Small city

51K

42m

00:26 UTC-4

USD

Explore on map →Climate twin →

Saint Croix, U.S. Virgin Islands is a 51K-resident city with 332 sunny days and 0 frost days annually and an annual PM2.5 of 6.3 µg/m³. The largest city in U.S. Virgin Islands.

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Climate

Feels-like °C

Dinner outside

Climate Lab·Saint Croix

Monthly climate metrics across temperature, precipitation, wind, and UV.

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Metric	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Temperature
Daily high°C	26	26	26	26	28	28	29	29	29	29	28	27	27
Daily mean°C	26	25	25	26	27	28	28	28	28	28	27	26	27
Daily low°C	25	25	25	25	26	27	27	27	27	27	26	26	26
Thermal comfort
High feelsDaily high feels-like°C	28	26	28	28	30	31	30	31	33	33	30	29	30
Mean feelsDaily mean feels-like°C	25	24	25	25	28	29	29	29	30	29	28	26	27
Low feelsDaily low feels-like°C	20	19	19	20	23	25	25	25	26	25	23	21	23
Humidity
HumidityRelative humidity%	76	76	76	76	78	79	80	80	79	79	77	77	78
Dewpoint°C	21.0	20.7	20.9	21.3	23.1	23.7	24.2	24.4	24.2	23.9	23.0	21.7	22.7
Precipitation
Rainfallmm	28	37	26	49	37	88	111	125	84	160	150	41	934
Rain days≥1mm	12	14	10	12	14	16	20	16	17	20	17	12	180
Wind
Wind avgm/s	6.9	7.9	7.0	6.3	6.8	7.1	7.7	6.8	5.3	5.8	6.9	6.8	6.8
Wind gustsm/s	10.0	10.2	9.8	8.6	8.5	9.0	10.1	9.5	8.1	8.4	9.2	10.3	9.3
Sun & UV
Sunshinehrs/day	9.5	10.4	10.4	10.5	10.9	11.0	10.7	10.7	10.2	9.3	9.0	9.4	10.2
Clear skyindex	75%	76%	75%	63%	58%	54%	57%	57%	64%	61%	58%	80%	65%
UV indexmax avg	7.0	8.5	10.5	11.3	11.1	10.1	9.7	10.4	10.2	8.9	7.0	6.6	9.3

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Lifestyle Calendar·Saint Croix

Outdoor living in Saint Croix is seasonal. 3 months of the year are the toughest stretch. Lunch outside is tough year-round, while walking is comfortable 9/12 months — impressive.

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Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

0/12

Dinner Outside

49Jan: 49% viability

33Feb: 33% viability

50Mar: 50% viability

50Apr: 50% viability

55May: 55% viability

39Jun: 39% viability

23Jul: 23% viability

40Aug: 40% viability

60Sep: 60% viability

57Oct: 57% viability

41Nov: 41% viability

46Dec: 46% viability

0/12

Dinner Outside

49Jan: 49% viability

33Feb: 33% viability

50Mar: 50% viability

50Apr: 50% viability

55May: 55% viability

39Jun: 39% viability

23Jul: 23% viability

40Aug: 40% viability

60Sep: 60% viability

57Oct: 57% viability

41Nov: 41% viability

46Dec: 46% viability

45%

Wind

0/12

Lunch Outside

43Jan: 43% viability

32Feb: 32% viability

48Mar: 48% viability

53Apr: 53% viability

57May: 57% viability

39Jun: 39% viability

22Jul: 22% viability

41Aug: 41% viability

56Sep: 56% viability

52Oct: 52% viability

44Nov: 44% viability

49Dec: 49% viability

0/12

Lunch Outside

43Jan: 43% viability

32Feb: 32% viability

48Mar: 48% viability

53Apr: 53% viability

57May: 57% viability

39Jun: 39% viability

22Jul: 22% viability

41Aug: 41% viability

56Sep: 56% viability

52Oct: 52% viability

44Nov: 44% viability

49Dec: 49% viability

45%

Humid

9/12

Walking

67Jan: 67% viability

55Feb: 55% viability

68Mar: 68% viability

78Apr: 78% viability

87May: 87% viability

67Jun: 67% viability

55Jul: 55% viability

66Aug: 66% viability

69Sep: 69% viability

59Oct: 59% viability

74Nov: 74% viability

70Dec: 70% viability

9/12

Walking

67Jan: 67% viability

55Feb: 55% viability

68Mar: 68% viability

78Apr: 78% viability

87May: 87% viability

67Jun: 67% viability

55Jul: 55% viability

66Aug: 66% viability

69Sep: 69% viability

59Oct: 59% viability

74Nov: 74% viability

70Dec: 70% viability

68%

Humid

6/12

Running

65Jan: 65% viability

53Feb: 53% viability

67Mar: 67% viability

75Apr: 75% viability

81May: 81% viability

60Jun: 60% viability

49Jul: 49% viability

51Aug: 51% viability

42Sep: 42% viability

41Oct: 41% viability

69Nov: 69% viability

68Dec: 68% viability

6/12

Running

65Jan: 65% viability

53Feb: 53% viability

67Mar: 67% viability

75Apr: 75% viability

81May: 81% viability

60Jun: 60% viability

49Jul: 49% viability

51Aug: 51% viability

42Sep: 42% viability

41Oct: 41% viability

69Nov: 69% viability

68Dec: 68% viability

60%

Humid

Tap any month for details · Click activity name for overview

ComfortableModerateUncomfortable

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Saint Croix · U.S. Virgin Islands

Climate

Climate Lab·Saint Croix

Lifestyle Calendar·Saint Croix

Air Quality Profile

Air Quality Profile

Who thrives in Saint Croix

Frequently asked about Saint Croix