Monthly outlook for Sunny Isles Beach, FL: average high 88.6°, average low 83.6°. That is 1.3° above the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 13 days and 3.4 inches. The warmest day looks like 10 August (92.5°), the coolest 10 August (78.5°).
88.6°/83.6°
Average high / low
+1.3°
Above normal
6 / 13
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
88.9°
86.2°
+1.5°
19 August – 28 August
88°
85.8°
+1.2°
29 August – 7 September
at normal
85.3°
—
August records over 66 years
94.3°1 August 2025All-time high
72.9°9 August 2025All-time low
Mon, 1092° / 79°0
92 °
Sunny Isles Beach, Monday, 10 August
Light rain. High 92°, low 79°.
Pressure30.15 inHg
Wind10.2 mph E
Humidity66%
Visibility6.2 mi
Dew point74°
Tue, 1188° / 80°0
88 °
Sunny Isles Beach, Tuesday, 11 August
Clear. High 88°, low 80°.
Pressure30.12 inHg
Wind9.9 mph E
Humidity63%
Visibility6.2 mi
Dew point73°
Wed, 1288° / 84°0
88 °
Sunny Isles Beach, Wednesday, 12 August
Clear. High 88°, low 84°.
Pressure30.06 inHg
Wind8.3 mph SE
Humidity60%
Visibility6.2 mi
Dew point72°
Thu, 1389° / 84°0
89 °
Sunny Isles Beach, Thursday, 13 August
Clear. High 89°, low 84°.
Pressure30.06 inHg
Wind14.6 mph SE
Humidity62%
Visibility—
Dew point74°
Fri, 1488° / 85°0
88 °
Sunny Isles Beach, Friday, 14 August
Overcast. High 88°, low 85°.
Pressure30.15 inHg
Wind15.5 mph E
Humidity60%
Visibility—
Dew point72°
Sat, 1588° / 85°0.11
88 °
Sunny Isles Beach, Saturday, 15 August
Light rain. High 88°, low 85°.
Pressure30.15 inHg
Wind15.1 mph SE
Humidity59%
Visibility—
Dew point71°
Sun, 1688° / 84°0
88 °
Sunny Isles Beach, Sunday, 16 August
Overcast. High 88°, low 84°.
Pressure30.12 inHg
Wind13.2 mph E
Humidity57%
Visibility—
Dew point70°
Mon, 1787° / 85°0.1
87 °
Sunny Isles Beach, Monday, 17 August
Light rain. High 87°, low 85°.
Pressure30.03 inHg
Wind8.9 mph SE
Humidity56%
Visibility—
Dew point69°
Tue, 1889° / 85°0
89 °
Sunny Isles Beach, Tuesday, 18 August
Partly cloudy. High 89°, low 85°.
Pressure30.03 inHg
Wind13.4 mph SE
Humidity59%
Visibility—
Dew point71°
Wed, 1989° / 85°0.02
89 °
Sunny Isles Beach, Wednesday, 19 August
Light rain. High 89°, low 85°.
Pressure30.03 inHg
Wind15 mph S
Humidity58%
Visibility—
Dew point72°
Thu, 2089° / 84°0.06
89 °
Sunny Isles Beach, Thursday, 20 August
Light rain. High 89°, low 84°.
Pressure30.00 inHg
Wind16.2 mph SE
Humidity54%
Visibility—
Dew point70°
Fri, 2189° / 85°0.03
89 °
Sunny Isles Beach, Friday, 21 August
Light rain. High 89°, low 85°.
Pressure30.00 inHg
Wind14.7 mph SE
Humidity58%
Visibility—
Dew point72°
Sat, 2288° / 84°0.01
88 °
Sunny Isles Beach, Saturday, 22 August
Light rain. High 88°, low 84°.
Pressure30.06 inHg
Wind14.9 mph E
Humidity58%
Visibility—
Dew point71°
Sun, 2386° / 84°0.48
86 °
Sunny Isles Beach, Sunday, 23 August
Rain. High 86°, low 84°.
Pressure30.06 inHg
Wind14.4 mph E
Humidity69%
Visibility—
Dew point74°
Mon, 2487° / 84°0.23
87 °
Sunny Isles Beach, Monday, 24 August
Light rain. High 87°, low 84°.
Pressure30.06 inHg
Wind16.4 mph SE
Humidity64%
Visibility—
Dew point73°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 78°0.22
85 °
Sunny Isles Beach, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.22 in
Chance of precipitation83%
Record high91° (2022)
Record low74° (1978)
Wed, 2686° / 78°0.3
86 °
Sunny Isles Beach, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low78°
Average precipitation0.3 in
Chance of precipitation90%
Record high90° (2022)
Record low74° (2023)
Thu, 2785° / 78°0.2
85 °
Sunny Isles Beach, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.2 in
Chance of precipitation80%
Record high89° (2019)
Record low75° (1974)
Fri, 2885° / 78°0.21
85 °
Sunny Isles Beach, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.21 in
Chance of precipitation82%
Record high90° (2023)
Record low75° (1968)
Sat, 2986° / 78°0.2
86 °
Sunny Isles Beach, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low78°
Average precipitation0.2 in
Chance of precipitation80%
Record high90° (1999)
Record low73° (1994)
Sun, 3085° / 78°0.26
85 °
Sunny Isles Beach, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.26 in
Chance of precipitation83%
Record high90° (2023)
Record low73° (1969)
Mon, 3186° / 78°0.24
86 °
Sunny Isles Beach, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low78°
Average precipitation0.24 in
Chance of precipitation83%
Record high91° (1998)
Record low74° (1968)
Tue, 0186° / 78°0.2
86 °
Sunny Isles Beach, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high86°
Average low78°
Average precipitation0.2 in
Chance of precipitation78%
Record high90° (2023)
Record low74° (2022)
Wed, 0285° / 78°0.24
85 °
Sunny Isles Beach, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.24 in
Chance of precipitation82%
Record high89° (2025)
Record low74° (2022)
Thu, 0385° / 78°0.27
85 °
Sunny Isles Beach, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.27 in
Chance of precipitation82%
Record high90° (2022)
Record low75° (1967)
Fri, 0485° / 78°0.2
85 °
Sunny Isles Beach, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.2 in
Chance of precipitation75%
Record high91° (2019)
Record low73° (2021)
Sat, 0585° / 78°0.26
85 °
Sunny Isles Beach, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low78°
Average precipitation0.26 in
Chance of precipitation85%
Record high90° (2022)
Record low74° (2008)
Sun, 0685° / 77°0.27
85 °
Sunny Isles Beach, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.27 in
Chance of precipitation82%
Record high92° (2019)
Record low74° (2008)
Mon, 0785° / 77°0.18
85 °
Sunny Isles Beach, Monday, 7 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.18 in
Chance of precipitation78%
Record high91° (2022)
Record low73° (2023)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Sunny Isles Beach, FL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Sunny Isles Beach, FL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.