Here are four that I think would possibly do good for you. Our average hottest part of summer temps are usually in the mid to high nineties, with plenty of humidity. These all hold up good for me.

OUR LADY OF GUADALUPE

ORCHID ROMANCE

SUNSPRITE

BELINDA'S DREAM

While I really like Poseidon, it seemed to slow down during the hottest part of summer, it was in its second season last year, hoping it will prove to hold up good in the heat this summer, seems like a really good rose, setting on lots of buds right now.

Thanks Sara_Ann for the pics .Orchad Romance looks beautiful. How is the black spot resistant during rainy season ?

Lady Guadalupe is pretty too ,does she get lots of thrips ?

Sorry, don't know if these are all florib. or not.
The ones noted Sacramento have been recommended in the past by Kathy as prospering in her sweltering garden (Sacramento is delta country) in the summer.
The others were noted for liking hot temps. Not just tolerating it.

Chihuly, Sacramento Ca, hot humid
Daybreaker, Austin TX
English Sachet, Sacramento Ca, hot humid
Heaven on Earth, NH blistering heat
Jean Giono
Jema
Joshua Bradley, Sacramento hot humid
Lavaglut, Sacramento Ca, hot humid
Out of Yesteryear
Outrageous
Party Time
Silver Star, Sacramento Ca, hot humid
Tahitian Sunset
Tequila Sunrise, Sacramento Ca, hot humid

Iris girl

Thanks ! I will be searching up all these roses .

Pink rose, thank you. Orchid Romance is healthy for me, no blackspot here. It gets about 5 feet tall. In its three seasons, Our Lady of Guadalupe hasn't gotten thrips, but probably hasn't been truly tested here for them, it doesn't have blackspot issues either.

Cinco de Mayo is awesome in my sultry zone 9a..I am right off a river and the beach isnt all that far either. In the summer we typically get a lot of rain which makes it really muggy. Cinco de Mayo has absolutely no black spot (and I don't spray..ever) Its a little bloom machine..

Its not for everyone due to its wild coloring but I love its 'smoked out' mauves, adobes/bricks, and pink tones!

http://www.jacksonandperkins.com/cinco-de-mayotrade-floribunda-rose/p/v1615/?gclid=CN_JgLWa-dICFQYHaQodVIILHg&utm_source=google&utm_medium=cpc&utm_campaign=ppc_google_pla&gdffi=341ebfce6bce4cc5b5f6be51f712e281&gdfms=821B420A28374A7B9E4E09756B9C3640&ef_id=WNpNRAAAAZEWCSao:20170328123219:s

I also love Poseidon although mine has turned into a climber 10ft+

Sultry

I love the colors of Cinco De Mayo , but I really like exhibition form roses and dont know if I will like the ruffly look . Is the bloom like Julia Child ?

Pink Rose, do you have any colors that you just don't like? These were picked for fragrance and have been super in our 100+ days. No-spray and own-root.

Ebb Tide

Lemon Spice

Scent-sation

Kordes Savannah (part of their Sunbelt Series) did great through fall and winter and is loaded in blooms now, super foliage. We haven't gotten hot here yet but heard great reviews.

Hi lavenderlace

No l actually like all rose colors .l got Savannah last month from k and m roses in 2 gallon size ,waiting for the blooms .l have a couple dwarf palms and l want to plant some healthy floribundas around them in a circle maybe 2 verieties.

Savannah has been mysterious for me. The blooms used to be hard and flat, like a button, with lots of petals and great fragrance. Now they are big and loose and soft and the color is much lighter. Still great fragrance and foliage.

The Cinco de Mayo are more of a semi double and more ruffled and open than Julia Child.

Are you looking for them to be grafted on Fortuniana? If so I'd reach out to Nelsons, K&M and Cool Roses. Otherwise have you tried the Verandas from Kordes? Lavender Veranda is very pretty and floriferous.

Sweet drift is non stop!

SoFl rose

Is your sweet drift and Lavender veranda own root ? or on multiflora ? Did you plant them in our sandy soil or in raised beds ?

I would love to get Lavender verandah on Fortuniana but unfortunately nobody has it .

I had Julia Child, but got rid of it because of blackspot. Sydney has Summers in the 90's and is humid.

I spray biweekly but prefer disease resistence roses .

By the way does anyone grow Daybreaker floribunda rose ?

Yes, mine are on their own roots. I've had the drifts for a few years now on their own roots without any type of nematode problems. I would dare to say they are fairy resistant to nematodes. Of course, mine are in good, amended soil with lots of organic matter. :)

I'll tell you what, though, there is no rose that performs as well as Sweet Drift for me, except maybe Easy Does it (on fortuniana). Sweet drift is a real winner and has done well in every single spot I have put her (I have over 10), even in the not so ideal spots, even in partial shade, she has thrived. It is truly a bullet proof rose for me. All drifts have done pretty well for me, but Sweet Drift is by far the best.

Thanks .where did you get sweet Drift ? Lowes ?

Lowes and Home Depot (mostly HD this season)

Yes, I think it's picking up steam in terms of word of mouth. It was also recognized by university of Georgia as the best performing Drift, and one of the best performers in their recent trials.

Older floribunda called Eutin (red)--quite hardy and floriferous, though it rests longer between blooming cycles than I like and occasionally needs a quick spray for a bit of BS between those bloom cycles. As a whole though, she is above average in BS resistance.

Kate