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Compare the Climate and Weather in Gustavia and Sydney

This page lets you compare and contrast the weather and climate in Gustavia and Sydney year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

You can compare up to 6 locations. Add more locations using the search box below or by clicking the map.

Gustavia
St. Barthélemy
Sydney *
Australia
Map

Average High and Low Temperature

Compare the Average High and Low Temperature in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F807588826847806285998545NowNowSydneySydneyGustaviaGustavia
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 82°F82°F84°F85°F86°F87°F87°F88°F88°F87°F85°F83°F
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 62°F65°F70°F73°F75°F78°F80°F79°F77°F72°F68°F63°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 75°F75°F76°F77°F78°F79°F80°F80°F80°F80°F78°F76°F
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 47°F49°F54°F58°F62°F65°F68°F68°F65°F59°F54°F49°F

Gustavia

Average Hourly Temperature in GustaviaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmhot

Sydney

Average Hourly Temperature in SydneyJul*Aug*Sep*Oct*Nov*Dec*Jan*Feb*Mar*Apr*May*Jun*12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcoldcoldcoolcoolcomfortablewarmcoldcold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%82318062NowNowSydneySydneyGustaviaGustavia
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 81%79%75%65%39%38%49%46%36%38%55%73%
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 75%78%76%69%63%67%70%71%73%70%66%68%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%2423016NowNowSydneySydneyGustaviaGustavia
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 1.2d1.0d1.2d2.3d5.3d3.6d3.9d5.5d6.8d6.9d5.6d2.9d
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 5.8d5.2d5.5d7.0d8.2d7.6d8.2d8.2d8.3d7.7d6.6d6.5d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in2.50.24.21.8NowNowSydneySydney
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 0.3″0.2″0.3″0.7″1.6″0.9″0.8″1.3″2.2″2.5″2.1″0.8″
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 1.9″2.0″1.8″2.3″2.9″2.5″3.2″4.0″3.1″3.1″2.7″2.6″

Hours of Daylight

Compare the Hours of Daylight in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr13.211.114.49.9NowNowSydneySydneyGustaviaGustavia
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 11.2h11.6h12.1h12.6h13.0h13.2h13.1h12.7h12.2h11.7h11.3h11.1h
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 10.1h10.9h11.9h12.9h13.9h14.4h14.1h13.3h12.3h11.2h10.4h9.9h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%1008741NowNowSydneySydneyGustaviaGustavia
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 29.2d26.1d27.8d29.0d30.9d30.0d31.0d31.0d30.0d31.0d29.6d29.9d
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 0.0d0.0d0.0d0.2d1.8d5.5d10.6d11.0d6.3d1.2d0.1d0.0d

Average Wind Speed

Compare the Average Wind Speed in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph16.812.38.27.3NowNowSydneySydneyGustaviaGustavia
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 15.915.614.513.914.115.716.615.313.312.614.115.5
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 8.28.17.97.97.97.98.18.07.67.47.68.1

Average Water Temperature

Compare the Average Water Temperature in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F84797464NowNowSydneySydneyGustaviaGustavia
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 79°F79°F79°F80°F81°F82°F82°F83°F84°F83°F82°F81°F
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 65°F64°F65°F66°F68°F70°F73°F73°F73°F72°F69°F67°F

Tourism Score

Compare the Tourism Score in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*002244668810107.62.77.82.3NowNowSydneySydney
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*002244668810108.85.25.5NowNowSydneySydneyGustaviaGustavia
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0%0%20%20%40%40%60%60%80%80%100%100%NowNowSydneySydneyGustaviaGustavia
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°F12,000°F12,000°FNowNowSydneySydneyGustaviaGustavia
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Gustavia and SydneyJanJul*FebAug*MarSep*AprOct*MayNov*JunDec*JulJan*AugFeb*SepMar*OctApr*NovMay*DecJun*0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh7.24.67.82.6NowNowSydneySydneyGustaviaGustavia
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Gustavia 5.36.16.87.16.35.96.15.95.24.74.74.9
JulAugSepOctNovDecJanFebMarAprMayJun
Sydney 2.93.95.26.37.07.67.56.75.54.23.12.6

This report illustrates the typical weather for Gustavia and Sydney year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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