Honiara
September
Weather in Honiara for September 2025
Your guide to Honiara weather in September - trends and predictions
In general, the average temperature in Honiara at the beginning of September is 29.7 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 29.7 °C by the end of September.
Honiara experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 212.6 mm.
Temperatures
Rain 🌧️
1
Dry days
29
Rainy days
0
Snow days
29°/24°
Temperatures
17 km/h
Avg max wind
81 %
Avg humidity
Honiara in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 30° | 3  30° | 4 30° | 5 29° | 6 30° | 7 30° |
| 8 28° | 9 29° | 10  29° | 11 29° | 12 30° | 13  29° | 14 28° |
| 15 28° | 16 28° | 17 29° | 18 29° | 19 30° | 20 30° | 21 30° |
| 22 29° | 23 29° | 24 30° | 25 30° | 26 30° | 27  30° | 28 29° |
| 29 30° | 30 29° |
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Temperatures trend during September in Honiara
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 29° /24° | 11 mm | 7 | |
| 2 Sept. | Moderate or heavy rain shower | 30° /24° | 6.8 mm | 7 | |
| 3 Sept. | Patchy rain possible | 30° /24° | 1.8 mm | 7 | |
| 4 Sept. | Patchy rain possible | 30° /24° | 4.3 mm | 7 | |
| 5 Sept. | Moderate or heavy rain shower | 29° /24° | 10.7 mm | 7 | |
| 6 Sept. | Patchy rain possible | 30° /23° | 1.9 mm | 7 | |
| 7 Sept. | Light rain shower | 30° /23° | 3.9 mm | 7 | |
| 8 Sept. | Light rain shower | 28° /23° | 5.8 mm | 7 | |
| 9 Sept. | Moderate or heavy rain shower | 29° /23° | 11.4 mm | 7 | |
| 10 Sept. | Partly cloudy | 29° /24° | 1.5 mm | 7 | |
| 11 Sept. | Light rain shower | 29° /24° | 2.9 mm | 7 | |
| 12 Sept. | Partly cloudy | 30° /24° | 3.3 mm | 7 | |
| 13 Sept. | Overcast | 29° /24° | 1.7 mm | 7 | |
| 14 Sept. | Moderate or heavy rain shower | 28° /24° | 10.6 mm | 7 | |
| 15 Sept. | Overcast | 28° /23° | 2.6 mm | 7 | |
| 16 Sept. | Light rain shower | 28° /23° | 5.8 mm | 7 | |
| 17 Sept. | Patchy rain possible | 29° /24° | 6.1 mm | 7 | |
| 18 Sept. | Patchy rain possible | 29° /24° | 7 mm | 7 | |
| 19 Sept. | Patchy rain possible | 30° /24° | 1.8 mm | 7 | |
| 20 Sept. | Patchy rain possible | 30° /24° | 1.7 mm | 8 | |
| 21 Sept. | Light rain shower | 30° /25° | 4.8 mm | 8 | |
| 22 Sept. | Light rain shower | 29° /24° | 5.6 mm | 7 | |
| 23 Sept. | Light rain shower | 29° /24° | 13.2 mm | 7 | |
| 24 Sept. | Patchy rain possible | 30° /24° | 0.8 mm | 7 | |
| 25 Sept. | Patchy rain possible | 30° /24° | 1.4 mm | 7 | |
| 26 Sept. | Patchy rain possible | 30° /24° | 3.3 mm | 8 | |
| 27 Sept. | Sunny | 30° /24° | 3.8 mm | 8 | |
| 28 Sept. | Moderate or heavy rain shower | 29° /24° | 26.6 mm | 7 | |
| 29 Sept. | Light rain shower | 30° /24° | 45.8 mm | 7 | |
| 30 Sept. | Light rain shower | 29° /25° | 4.5 mm | 7 | |
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Important Notice
Our weather forecast for Honiara in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Honiara forecast closer to your planned date for the most up-to-date weather information.
Honiara in September - FAQ
What are the expected maximum and minimum temperatures in Honiara during September?
During September, expect a variety of temperatures with highs around 29° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Honiara during September?
Significant rainfall exceeding 212.6 mm is expected in Honiara during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Honiara during September?
The average wind speed in Honiara during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Honiara
Explore the daily rainfall trends and prepare for Honiaras September weather 💧
UV exposure in Honiara during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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