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Santa Isabel Island in September 2026: weather, temperatures and activities

Do you want to visit Santa Isabel Island in September 2026? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether September is a good month to travel to Santa Isabel Island, Solomon Islands.

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Is it worth visiting Santa Isabel Island in September?

Check your ideal travel criteria and see if the month of September suits your plans to go to Santa Isabel Island.
What matters most?
Santa Isabel Island in September 2026: weather, temperatures and activities

Page summary

Santa Isabel Island in September in summary
Adverse weather
Min 27°C Max 29°C 491 mm 21 day(s) 81% 46% UV 6 10.2 h/day
Possible activities in September
Beach and swimmingAnimal observationDiving and snorkelingNature and landscapesBoat trip and cruise
Practical guidelines
Very large crowds 06:19 18:22
Hourly weather

Average weather in Santa Isabel Island in September 2026

Adverse weather

The weather in Santa Isabel Island in September 2026 is based on statistical data from previous years in September. This allows you to forecast the weather in September 2026. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Santa Isabel Island in September

Temperatures, precipitation and monthly trends help to better understand the climate in Santa Isabel Island in September.

Temperatures and rain in Santa Isabel Island in September

Average daily weather

Temperatures and rain day by day in September.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of September is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Santa Isabel Island in September

Seasonal normals

Seasonal normals of Santa Isabel Island in September

Check the seasonal normals in Santa Isabel Island in September and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
September
Weather data August September October
Outside temperature
Average temperature 27.3°C 27.7°C 28.1°C
Maximum temperature 28.2°C 28.6°C 29.1°C
Minimum temperature 26.4°C 26.8°C 27.2°C
Record maximum temperature 32.0°C
(2021)
32.0°C
(2021)
33.0°C
(2021)
Record low temperature 20.0°C
(2020)
23.0°C
(2019)
23.0°C
(2020)
Number of days at +30° 1 day(s)
(3%)
4 day(s)
(13%)
9 day(s)
(29%)
Number of days at +18° 31 day(s)
(100%)
30 day(s)
(100%)
31 day(s)
(100%)
Number of days below 0° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Wind
Wind speed 17 km/h 16 km/h 14 km/h
Wind temperature 26.5°C 26.8°C 27.2°C
Precipitation (rain)
Precipitation 480.4 mm 491.0 mm 461.4 mm
Number of days with precipitation 30 day(s)
(97%)
28 day(s)
(93%)
29 day(s)
(94%)
Number of days with significant precipitation (greater than 5 mm) 21 day(s)
(69%)
21 day(s)
(70%)
22 day(s)
(70%)
Record precipitation in one day 159.7 mm
(2011)
169.5 mm
(2019)
126.8 mm
(2020)
Other weather data
Humidity 82% 81% 79%
Visibility 8.8 km 8.7 km 8.8 km
Cloud cover 48% 46% 42%
UV index 6 6 6
Daily sunshine 10h 10h 11h
Sunrise and sunset
Sunrise time 06h34 06h19 06h03
Sunset time 18h26 18h22 18h19
Day length 11h52 12h03 12h16
Our opinion on the climate in September
The review of Where And When adverse weather adverse weather adverse weather
Activities and events

What to do in Santa Isabel Island in September?

Possible activities in September
Beach and swimmingAnimal observationDiving and snorkelingNature and landscapesBoat trip and cruise
Observed weather

What was the weather like in Santa Isabel Island in September last?

Find the observed weather calendar in Santa Isabel Island in September 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Patchy rain nearby
25°C28°C2.4 mm
2
Patchy rain nearby
26°C30°C0.0 mm
3
Patchy rain nearby
26°C29°C0.3 mm
4
Patchy rain nearby
26°C29°C0.7 mm
5
Patchy light drizzle
26°C30°C0.2 mm
6
Patchy light rain in area with thunder
26°C28°C1.7 mm
7
Light rain shower
26°C28°C2.9 mm
8
Patchy rain nearby
26°C29°C2.7 mm
9
Light rain shower
26°C28°C7.3 mm
10
Patchy rain nearby
26°C29°C1.9 mm
11
Moderate or heavy rain shower
25°C28°C14.6 mm
12
Patchy light drizzle
25°C27°C4.3 mm
13
Light rain shower
25°C27°C13.3 mm
14
Patchy rain nearby
26°C30°C1.7 mm
15
Patchy rain nearby
26°C29°C1.8 mm
16
Partly Cloudy
26°C30°C1.3 mm
17
Patchy rain nearby
26°C30°C0.8 mm
18
Light rain shower
26°C28°C4.0 mm
19
Light rain shower
26°C28°C3.7 mm
20
Light rain shower
26°C29°C4.1 mm
21
Patchy light drizzle
26°C30°C3.9 mm
22
Light rain shower
26°C29°C6.9 mm
23
Patchy rain nearby
26°C29°C3.4 mm
24
Patchy rain nearby
26°C29°C1.9 mm
25
Patchy rain nearby
26°C29°C1.5 mm
26
Patchy rain nearby
26°C30°C0.3 mm
27
Patchy rain nearby
26°C30°C1.6 mm
28
Patchy rain nearby
26°C29°C1.0 mm
29
Patchy rain nearby
26°C29°C6.2 mm
30
Clear/Sunny
26°C30°C0.7 mm
Nearby

Where to go near Santa Isabel Island in September?

Compare cities and destinations near Santa Isabel Island in September to find another travel stop, a nearby alternative or a logical continuation of your stay in Santa Isabel Island.

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Every month

Best time to visit Santa Isabel Island month by month

Compare the weather in Santa Isabel Island across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Santa Isabel Island in September: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

Not really. The weather conditions are unfavorable in Santa Isabel Island in September, which places this month 6th out of 12. A trip is still possible, but plan a flexible itinerary.

Expect an average of 29°C during the day and 27°C at night, with about 491 mm of precipitation spread over 21 rainy days.

Expect about 10.2 hours of sunshine per day on average for this month.

No activity stands out as ideal this month, but conditions remain acceptable for Beach and swimming, Animal observation, Diving and snorkeling and Nature and landscapes.

Yes: this month is in Very large crowds, with a visitor index of 96/100. Book your accommodation and transportation well in advance.
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