When is the best time to go to Lake Oswego
The chart above shows the best time of year to visit Lake Oswego, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Lake Oswego
Lake Oswego weather by month
Please note our recommendations for when to visit Lake Oswego are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 6°C | 175mm | 3.1hrs | 10.3hrs |
January in Lake Oswego is generally wet with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Lake Oswego for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
January is in the winter in Lake Oswego and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 7°C (45°F), whilst at night 0°C (33°F) is normal.
On average January is the driest month of the year in Lake Oswego with around 175mm 6.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.1 hours of sunshine per day.
Lake Oswego weather in January »
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 9°C | 127mm | 4.5hrs | 11.4hrs |
February in Lake Oswego is generally wet with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Lake Oswego for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in Lake Oswego and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cool 10°C (50°F), whilst at night 1°C (35°F) is normal.
On average February is the 2nd driest month of the year in Lake Oswego with around 127mm 5 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.5 hours of sunshine per day.
Lake Oswego weather in February »
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 11°C | 118mm | 6.6hrs | 12.9hrs |
The weather in March in Lake Oswego is characteristically cool and damp.
Based on weather alone, this is probably a time of year to avoid going to Lake Oswego for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
March is in the spring in Lake Oswego and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 13°C (55°F), whilst at night 3°C (37°F) is normal.
On average March is the 3rd driest month of the year in Lake Oswego with around 118mm 4.6 inches of rain making it a damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
Lake Oswego weather in March »
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 14°C | 77mm | 7.9hrs | 14.5hrs |
Lake Oswego's weather in April is typically cool and reasonably dry in nature.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Lake Oswego.
April is in the spring in Lake Oswego and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 15°C (60°F), whilst at night 4°C (39°F) is normal.
On average April is the 4th driest month of the year in Lake Oswego with around 77mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 hours of sunshine per day.
Lake Oswego weather in April »
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 61mm | 9.5hrs | 16hrs |
May is a reasonably dry month in Lake Oswego and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Lake Oswego.
May is in the spring in Lake Oswego and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 7°C (44°F) is normal.
On average May is the 5th driest month of the year in Lake Oswego with around 61mm 2.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.5 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 44mm | 10.5hrs | 10.3hrs |
Mild and reasonably dry weather often prevails in Lake Oswego during the month of June
It is perhaps a good month to visit Lake Oswego, with some surprisingly good weather at this time of year.
June is in the summer in Lake Oswego and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 23°C (73°F), whilst at night 10°C (50°F) is normal.
On average June is the 6th driest month of the year in Lake Oswego with around 44mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.5 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 23°C | 18mm | 11.6hrs | 11.4hrs |
July in Lake Oswego is generally dry with the temperature being warm.
It is perhaps the perfect month to visit Lake Oswego, with some particularly good weather at this time of year.
July is in the summer in Lake Oswego and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 11°C (52°F) is normal.
On average July is the 6th wettest month of the year in Lake Oswego with around 18mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.6 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 29mm | 10.5hrs | 12.9hrs |
The weather in August in Lake Oswego is characteristically warm and dry.
It is perhaps the perfect month to visit Lake Oswego, with some inordinately good weather at this time of year.
August is in the summer in Lake Oswego and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (80°F), whilst at night 12°C (53°F) is normal.
On average August is the 5th wettest month of the year in Lake Oswego with around 29mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.5 hours of sunshine per day.
Lake Oswego weather in August »
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 50mm | 8.7hrs | 14.5hrs |
Lake Oswego's weather in September is typically mild and reasonably dry in nature.
It is perhaps a good month to visit Lake Oswego, with some extremely good weather at this time of year.
September is in the fall / autumn in Lake Oswego and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 23°C (74°F), whilst at night 9°C (49°F) is normal.
On average September is the 4th wettest month of the year in Lake Oswego with around 50mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
Lake Oswego weather in September »
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 16°C | 88mm | 5.5hrs | 16hrs |
October is a a little damp month in Lake Oswego and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of pretty acceptable weather around this time of year. This makes it an okay time to visit Lake Oswego.
October is in the fall / autumn in Lake Oswego and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 6°C (42°F) is normal.
On average October is the 3rd wettest month of the year in Lake Oswego with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
Lake Oswego weather in October »
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 10°C | 168mm | 3hrs | 10.3hrs |
The climate in Lake Oswego during November can be summarized as cool and wet.
Based on weather alone, this is probably a time of year to avoid going to Lake Oswego for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
November is in the fall / autumn in Lake Oswego and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 11°C (52°F), whilst at night 3°C (38°F) is normal.
On average November is the 2nd wettest month of the year in Lake Oswego with around 168mm 6.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 3 hours of sunshine per day.
Lake Oswego weather in November »
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 6°C | 193mm | 2.4hrs | 11.4hrs |
December in Lake Oswego is generally wet with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Lake Oswego for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
December is in the winter in Lake Oswego and is typically the warmest month of the year. Daytime maximum temperatures average around a cold 7°C (45°F), whilst at night 1°C (33°F) is normal.
On average December is the wettest month of the year in Lake Oswego with around 193mm 7.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.4 hours of sunshine per day.
Other monthly averages
Lake Oswego weather stats
| Hottest month: | August | 26°C 78.8°F |
|---|---|---|
| Driest month: | July | 18mm 0.7ins |
| Sunniest month: | July | 11.6hrs |
| Coldest month: | January | 7°C 44.6°F |
| Wettest month: | December | 193mm 7.6ins |
| Warmest sea: | August | 13.5°C 56.3°F |
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